
Sleep regression is a period of time, usually lasting about two to four weeks, when a baby who was previously sleeping well suddenly has trouble settling down at bedtime or wakes up frequently in the middle of the night. Sleep regressions can occur at many points in a child's life, but they are most commonly observed around 4 months, 8-10 months, 12 months, and 18 months. At 12 months, sleep regression can be attributed to factors such as teething, separation anxiety, nightmares, and increased awareness of their surroundings, leading to restlessness. While sleep regression can be challenging for both children and caregivers, it is often temporary and can be managed by maintaining consistent bedtime routines, providing comfort and reassurance, and addressing any underlying causes of sleep disruption.
| Characteristics | Values |
|---|---|
| Age | 12 months |
| Duration | 1-4 weeks |
| Causes | Separation anxiety, teething, nightmares, fear of the dark, illness, overstimulation, changes in routine, increased awareness of surroundings, physical growth, increased activity levels |
| Symptoms | Fussiness, refusal to sleep or nap, crying, night waking, shorter naps |
| Strategies | Consistency with bedtime routines, comfort and reassurance, maintaining a calm environment, positive sleep habits, patience |
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What You'll Learn

Sleep regression is temporary and normal
Sleep regression is a common phenomenon, typically occurring around 4 months, 8-10 months, 12 months, and 18 months during a baby's first year. It can also happen at various points during the toddler years, including around 2 and 3 years of age. While sleep regression can be challenging for parents and caregivers, it is important to remember that it is both temporary and normal.
Sleep regression refers to a period when a baby or toddler who has previously slept well suddenly starts experiencing sleep difficulties. This might include trouble settling down at bedtime, frequent night wakings, resisting naps, increased fussiness, or taking longer naps during the day. These changes can be frustrating for parents, but they are a normal part of a child's development and typically last for about two to four weeks.
Several factors can contribute to sleep regression. One of the main causes is reaching significant developmental milestones, such as crawling, standing, or walking, or experiencing increased emotional engagement, communication skills, and cognitive abilities. These milestones can lead to temporary sleep problems as the child's sleep needs adjust. For example, they may need fewer naps or more awake time. Additionally, factors such as teething, growth spurts, travel, illness, or changes in routine can also trigger sleep regression.
While sleep regression is temporary, there are strategies that parents and caregivers can use to help their child through this period. Maintaining a consistent bedtime routine and sleep schedule is crucial. This consistency provides a sense of security and familiarity, which can help reduce sleep problems. It is also important to be responsive to the child's needs, offering comfort and reassurance when they are distressed. Building a strong relationship with your toddler can make them feel safe and secure, which may help improve their sleep.
It is worth noting that not all children experience sleep regression in the same way. Every child is unique, and their sleep patterns may vary. If you have concerns or questions about your child's sleep or potential underlying causes, don't hesitate to reach out to your healthcare provider for advice and support.
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It can be caused by teething, illness, or changes in routine
Sleep regression is a period of time, usually lasting about two to four weeks, during which a baby who was previously sleeping well suddenly has trouble settling down at bedtime or wakes up frequently in the middle of the night. While sleep regression is typically associated with periods of high growth and development, it can also be triggered by other factors such as teething, illness, or changes in routine or environment.
Teething can cause discomfort and pain, making it difficult for toddlers to fall asleep or stay asleep. This is a common issue during the 12-month sleep regression, as many babies start teething around this age.
Illness can also disrupt a toddler's sleep. Signs that your baby might be unwell include fever, nasal discharge, coughing, swollen glands, or an earache. If you suspect your baby is sick, it is important to seek medical advice, especially if they are experiencing any of the mentioned symptoms.
Changes in routine or environment can also trigger sleep regression. As toddlers grow, they may need to transition from a cot to a bed, start daycare in a new room, or adjust to using a cup instead of a bottle. These changes can impact their sleep patterns and cause temporary sleep disturbances. Additionally, the development of new motor skills and increased activity levels during the day can affect their sleep habits.
It is important to note that not all toddlers will experience sleep regression at the same age, and the duration of sleep regression can vary depending on its underlying causes. Some toddlers may experience sleep regression at 12 months, while others may go through it at 15 or 18 months. To help your toddler through this phase, it is recommended to maintain consistent bedtime routines, provide comfort and reassurance, and focus on building a strong relationship to foster a sense of safety and security.
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Separation anxiety is a common factor
Sleep regression is a period of time, usually lasting about two to four weeks, when a baby who has been sleeping well suddenly has trouble settling down at bedtime or wakes up fussing in the middle of the night. Sleep regression is usually temporary and can occur at many points in a child's life. It is often associated with periods of high growth and development.
Infant separation anxiety usually begins around 8 months when babies start to explore away from their caregivers. Between 8 and 14 months, children with separation anxiety may also become wary of new people and places since they associate their parents with familiarity and safety. Separation anxiety can lead to new sleep challenges, and it is important for caregivers to be responsive to their child's needs. Caregivers should let their toddler know that they are emotionally and physically available if they become distressed.
There are several strategies that caregivers can use to help their child cope with separation anxiety and improve their sleep. Maintaining consistent sleep schedules and bedtime routines is important, as this can help to reduce the duration of separation anxiety waves, which tend to come in waves over the first few years of a child's life. Caregivers can also try to spend extra one-on-one time with their child, even if it is just for 10-15 minutes. This extra attention can help the child adjust to big transitions or changes. Playing games like peek-a-boo or hide-and-seek can also help reinforce that the caregiver will always come back.
Additionally, introducing a comfort object, such as a lovey or transitional object, can provide a sense of security for the child during stressful transitions. However, it is important to note that loveys or transitional objects are not safe for sleep under 12 months. Caregivers can also practice leaving the room and coming back, reassuring the child that they will return. While it can be tempting, it is best not to sneak away when leaving the child with a babysitter or at daycare.
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Babies may resist sleep or wake up frequently
Sleep regression is a period when a baby or toddler who was sleeping well suddenly has trouble falling asleep or wakes up frequently at night. It is common for sleep regression to occur around the 12-month mark, but it can happen at any time during a child's first year. The good news is that sleep regression is usually temporary and will likely resolve as your child gets older.
There are many reasons why your 1-year-old may be resisting sleep or waking up frequently. Firstly, distractions and their growing imaginations can interrupt sleep. Toddlers are increasingly aware of their surroundings, so it is important to minimise distractions and create a calm environment for sleep. Additionally, their growing imaginations can lead to fears and nightmares, which may cause them to wake up or resist sleep.
Another reason for sleep regression could be separation anxiety. As toddlers form stronger emotional attachments to their parents or caregivers, they may experience distress at bedtime and wake up seeking reassurance. This often peaks at around 18 months and tends to go away with age.
Teething pain and discomfort can also impact a toddler's sleep. Many toddlers are getting their 2-year molars, which can cause sleep disturbances. Additionally, physical growth and increased activity levels can lead to restlessness and overstimulation, making it difficult for toddlers to settle down at bedtime.
Finally, it is important to consider environmental factors and family relationships. Toddlers may resist sleep if they want to stay up with the family. Sticking to a consistent bedtime routine and ensuring your toddler feels safe and secure can help prevent sleep issues.
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Maintaining a routine helps babies sleep
Sleep regression is a period of time, usually lasting about two to four weeks, when a baby who has been sleeping well suddenly has trouble settling down at bedtime or wakes up multiple times in the middle of the night. Sleep regression can occur at many points in a child's life, but during the first year, they are most commonly seen around 4 months, 8-10 months, 12 months, and 18 months. Sleep regression is often temporary and associated with periods of high growth and development. For instance, around 18 months, toddlers may develop night-time fears, become more emotionally attached to parents or caregivers, and experience separation anxiety, which can cause sleep regression.
Maintaining a consistent bedtime routine can help babies sleep through sleep regression more quickly. Routines are reassuring to babies and reinforce natural circadian rhythms, signaling that it is time to go to sleep. A good bedtime routine might include feeding with cuddles, a bath, a book, a massage, and a lullaby. It is important to be flexible and adjust the sleep schedule according to the baby's natural rhythms. For example, the goal is to put the baby down when they are drowsy but not yet asleep, so they learn to fall asleep without assistance. As babies get older, their wake windows change, and they may even be ready to drop a nap. It is important to ensure that the baby has appropriate wake windows for their age to help them have enough sleep pressure to fall asleep and stay asleep.
In the first few months, newborns spend most of their time asleep, sleeping in short bursts of 2-3 hours between feeds. During this time, it is common for newborns to fall asleep in their caregiver's arms or when rocked in a baby sling. As they get older, they may only fall asleep when held or when their caregiver is standing by the cot. A simple, flexible routine can help caregivers feel more in control during this time, such as a feed, play, sleep cycle. It is important to watch the baby's cues and respond accordingly. For example, a baby may show signs of tiredness soon after feeding, indicating that it is time for sleep, even if there has not been much time for play.
As babies approach 3 months old, they are capable of self-soothing, so it is not necessary to pick them up immediately if they fuss during the night or during naps. Instead, caregivers can wait a few minutes to see if the baby can fall back asleep on their own. A daytime routine can also help bedtime go more smoothly. For example, caregivers can wake up in the morning with cuddles and a feed, followed by a walk in the stroller or carrier. After the baby's afternoon nap, it is tummy time and babbles in the rocker.
Overall, maintaining a consistent and flexible routine that follows the baby's natural rhythms can help babies sleep through sleep regression more quickly and develop healthy sleep patterns.
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Frequently asked questions
Sleep regression is a period of time when a baby or toddler who has been sleeping well suddenly has trouble settling down at bedtime or wakes up fussing in the middle of the night. Sleep regressions can last anywhere from a few days to a few weeks.
A 1-year-old experiencing sleep regression may be fussier than usual and will refuse to sleep at nap time or bedtime. They may also wake up multiple times in the middle of the night when they were previously sleeping well.
There is no single cause of sleep regression, but it often coincides with periods of high growth and development. Common causes include teething, separation anxiety, nightmares, and changes in routine.
It is important to be patient and consistent. Stick to your usual bedtime and nap time routines, and consider sleep training methods. Be responsive to your child's needs and provide comfort and reassurance as necessary.











































