
The 18-month sleep regression is a period between 14 and 19 months of age when parents tend to see recurrent sleep issues arise. Sleep regression at this age is not a guarantee, but it is considered one of the toughest periods of sleep regression for toddlers. It is associated with brain development and physical milestones, and toddlers may experience a return of separation anxiety, a desire for independence, and a need to test boundaries. This can lead to sleep refusal, shorter naps, and frequent night wakings. While this regression can be challenging, it is a temporary phase and a sign of a child's growth and development.
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What You'll Learn

It's not technically a regression
While the phrase "18-month sleep regression" is widely used, it is important to understand that sleep is not actually going backwards or permanently "regressing". Sleep skills are not lost overnight, and there is no magical date that triggers a regression. Instead, sleep regressions are typically associated with brain development and physical milestones.
The 18-month sleep regression refers to a period between 14 and 19 months when toddlers often experience significant developmental changes. These changes can include physical growth spurts, the eruption of new teeth, and the development of gross and fine motor skills. At this age, toddlers also undergo remarkable cognitive, social, and emotional development. They start to test boundaries, seek independence, and experience separation anxiety. This newfound desire for independence can lead to resistance at bedtime and a preference for exploring instead of sleeping.
The combination of these factors can result in a temporary disruption in sleep patterns, which may manifest as taking longer to fall asleep, frequent night wakings, early morning risings, nap protesting, or shorter naps. It is important to note that not all toddlers will experience these sleep issues, and individual sleep habits and parental responses play a significant role in whether sleep regression occurs.
The 18-month sleep regression, like others, is highly variable in duration and impact. While it typically lasts for a few weeks, it can be shorter or longer depending on the child and underlying issues. During this time, it is essential for caregivers to maintain healthy sleep habits and routines to support their toddler's sleep needs. Teaching independent sleep skills and self-soothing techniques can also help improve sleep during this challenging period.
While it may be tempting to worry about the potential challenges of the 18-month sleep regression, it is important to remember that it is a normal part of a toddler's development. This period marks significant growth and progress, and the temporary sleep disruption is a sign of their evolving physical, cognitive, and emotional capabilities. Understanding that it is not technically a regression can help caregivers approach this phase with a sense of support and encouragement for their toddlers' overall development.
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It's linked to development and growth
The 18-month sleep regression is linked to a child's development and growth. This period marks a time of rapid development, with toddlers experiencing significant physical, cognitive, and emotional changes. These changes can impact sleep quality and quantity, leading to what is commonly referred to as a sleep regression.
During this phase, toddlers are gaining independence and seeking to test boundaries. They are also developing advanced motor skills and a better understanding of cause and effect. Their increased mobility and awareness, and expanded cognitive functions can contribute to resistance at bedtime and restlessness during sleep.
The growth hormones released during this developmental stage can disrupt sleep cycles, and teething discomfort can further impact sleep. Additionally, the return of separation anxiety can cause toddlers to become concerned when left alone to sleep, leading to sleep protests.
While it is called a sleep regression, it is important to understand that sleep skills are not permanently regressing. Instead, these temporary changes in sleep patterns indicate that your child's brain and body are working hard during this developmental stage. Their sleep may be interrupted as they learn new skills and experience cognitive and physical shifts.
The 18-month sleep regression is a sign of your child's growth and development. It is a challenging but normal part of their progression, and it is important to remember that it will not last forever. Supporting your child's sleep during this time with consistent and healthy sleep habits can help minimize its impact and duration.
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Separation anxiety and independence
The 18-month sleep regression is a period between 14 and 19 months of age when parents tend to see recurrent sleep issues arise. This regression is associated with toddlers' development and growth, as well as their desire for independence.
At 18 months, toddlers are going through significant physical, cognitive, and social-emotional development. They are learning new skills, becoming more mobile, and their thinking and reasoning abilities are expanding. This increased awareness of their abilities and understanding of cause and effect leads to a heightened sense of independence. They begin to test boundaries, seek independence, and may start to say "no" more frequently.
During this time, it is common for toddlers to experience separation anxiety, which can contribute to sleep challenges. Separation anxiety is a normal part of a child's development and indicates secure attachment. As their new independence takes them further from their caregivers, toddlers may feel unsure and crave the security of having their caregivers close by. They want reassurance that they are safe. Separation anxiety can manifest as increased clinginess, crying, or resistance to bedtime. It can also lead to trouble settling down for sleep and more frequent night wakings.
To help your toddler through this time, it is important to respond to their separation anxiety and instill confidence in their ability to be away from you for periods of time. Maintaining a consistent bedtime routine can provide a sense of familiarity and comfort. This routine should include engaging in soothing activities in soft lighting, making sure your toddler is comfortable, and saying goodnight in a reassuring way. You can also introduce a comfort object, such as a blanket or soft toy, to help your toddler feel safe and secure.
Additionally, you can encourage self-soothing by giving your toddler the opportunity to calm themselves down before responding to their cries. It is generally recommended to avoid co-sleeping, as it can hinder your toddler's ability to feel independent and secure in their own bed. Instead, provide comfort and reassurance while preserving the feel of bedtime by keeping the lights low and maintaining a quiet environment. You can gradually increase the distance from which you soothe your toddler, and providing comforting accessories, such as a favorite toy or a stuffed animal, can also help.
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Signs and symptoms
While the 18-month sleep regression is widely discussed, it is not a recognised developmental regression. However, many parents do find that their toddler's sleep is disrupted around this age. This is due to a combination of physiological changes, developmental leaps, and nap transitions.
The 18-month sleep regression is characterised by a temporary change in sleep patterns, with toddlers suddenly taking longer to fall asleep, frequently waking up at night, rising early, refusing naps, and taking shorter naps. This regression can be particularly challenging because toddlers at this age are more vocal and better able to express their wishes and assert their opinions. They also have a stronger desire for independence, which can lead to protests if sleep is being chosen for them.
During this period, toddlers are typically settling into toddlerhood and gaining new motor skills. They are also experiencing significant physical, cognitive, and social-emotional growth, which can impact their sleep. For example, growth hormones released to help your child get bigger can disrupt their sleep cycles, and teething can cause discomfort and make it harder to sleep.
Separation anxiety is another common factor contributing to sleep regression at 18 months. Toddlers may become concerned when parents or caregivers leave them alone to sleep, as they crave the security of knowing that their caregivers are close by. This can lead to frequent wake-ups and bedtime battles.
The 18-month sleep regression can last anywhere from 2 to 6 weeks, with peaks and troughs throughout this period. Some days and nights will be fine, followed by rough patches that can last for about a week. It is important to remember that this regression is temporary and should not be seen as a permanent setback.
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How to manage it
How to manage the 18-month sleep regression
While the 18-month sleep regression is a challenging phase for both toddlers and their caregivers, there are several strategies that can help manage it. Firstly, it is important to remember that this phase is temporary and will not last forever. Secondly, maintaining a consistent bedtime routine and schedule is crucial. Here are some specific strategies to consider:
- Reinforce a bedtime routine: Establish a predictable pattern to help prepare your toddler for sleep. This could include activities such as reading a book, brushing teeth, and turning on a nightlight. Consistency is key, so try to stick to the same routine each night.
- Prioritize naps: Toddlers still need naps during the day to ensure they are getting enough total sleep. Prioritize creating a consistent nap schedule, as inconsistent naps can lead to overtiredness, exacerbating sleep issues.
- Address physical discomfort: Teething, sickness, or discomfort from growth spurts can disrupt sleep. Address any physical concerns that may be causing your toddler discomfort, such as providing appropriate pain relief for teething.
- Understand their development: Recognize that your toddler is going through significant physical, cognitive, and emotional development. Their increased mobility, awareness, and desire for independence are all factors that can impact their sleep. Understanding these changes can help you be more patient and empathetic during this phase.
- Wait before responding: If your toddler cries when you first put them down or during the night, don't immediately respond. Give them a chance to self-soothe and fall back asleep independently.
- Be creative and diplomatic: As your toddler gains more advanced motor skills and a heightened sense of independence, you may need to get creative with your strategies. A sense of humour and a flexible approach can go a long way during this phase.
- Avoid creating bad habits: While it's important to support your toddler's sleep needs during this time, try to avoid falling into routines that you won't want to continue in the long term. For example, if you don't want your toddler to develop a habit of co-sleeping, don't start bringing them into your bed during this phase.
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Frequently asked questions
The 18-month sleep regression is a period between 14 and 19 months of age when toddlers tend to experience recurrent sleep issues.
Common signs include taking longer to fall asleep, frequent nighttime wakings, early morning risings, nap protesting, and shorter naps.
The 18-month sleep regression is associated with brain development and physical milestones. Growth hormones released during this time can disrupt sleep cycles. Toddlers also experience a desire for independence, a stronger sense of self, and separation anxiety, which can lead to sleep protests.
The 18-month sleep regression can last anywhere from 2 to 6 weeks, but it's important to remember that it is a temporary challenge and will not last forever.











































