
Many parents experience sleep issues with their 9-month-old babies. This is often due to what is known as the 8-10 month sleep regression, a period of time when a baby who previously slept well suddenly has trouble settling down to sleep, wakes up multiple times during the night, or struggles with naps. This is a normal developmental phase that can last from a few days to a few weeks or even months. During this time, babies are reaching major cognitive, emotional, and physical milestones, such as learning to sit up, crawl, pull up, babble, and stack. They are also learning about object permanence, which can lead to separation anxiety and sleep disturbances. Teething pain can also interrupt a baby's sleep during this time. To help your 9-month-old sleep better, it is important to establish a consistent daily routine and sleep schedule, use white noise to block out disturbances, and ensure the baby's room is at a comfortable temperature.
| Characteristics | Values |
|---|---|
| Sleep duration | 12-16 hours per day, including a stretch of 9-12 hours at night |
| Number of naps | 2 naps per day |
| Nap duration | 30 minutes to 2 hours |
| Sleep regression | 8-10 month sleep regression, lasting a few days to weeks or months |
| Sleep issues | Crying, fussiness, reluctance to nap, waking up multiple times at night |
| Causes | Teething, illness, separation anxiety, development of object permanence |
| Solutions | Consistent daily routine, white noise, pain relief for teething, night weaning |
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What You'll Learn

Sleep regression
The 9-month sleep regression is a temporary disruption in your baby's sleep schedule. It is triggered by developmental leaps and can happen anytime between 7 and 10 months of age. During this period, your baby's brain is rapidly developing, contributing to significant changes in learning new skills, categorising objects, and cognitive development, which can affect sleep patterns.
Some common signs that your baby is going through the 9-month sleep regression include increased fussiness at bedtime, more frequent overnight wake-ups, trouble settling down to sleep, and clinginess when you leave the room. They may also be more irritable due to teething pain or distress caused by separation anxiety.
To help your baby through this phase, consider the following strategies:
- Stick to a consistent bedtime routine: A predictable routine helps signal to your baby that it's time to wind down. Include calming activities like a warm bath, reading a book, singing a lullaby, or playing soft music.
- Create a sleep-friendly environment: Ensure the room is dark, quiet, and at a comfortable temperature.
- Work on independence at bedtime: Sleep training can help your baby learn to fall asleep independently. Consistency is key, and it's important to choose a method that you're comfortable with.
- Manage separation anxiety: Your baby is developing object permanence, which is a positive milestone. Support them through this by creating a consistent yet flexible daily routine.
- Adjust napping schedules: Your baby may be ready to transition from three to two naps a day. An early bedtime can help ensure a better night's sleep.
Remember, this phase is usually short-lived, and you can take proactive steps to help your baby sleep better during this time.
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Separation anxiety
The 8-10 month sleep regression is often associated with a peak in separation anxiety. During this regression, babies may become more clingy and insistent on having their caregiver stay with them as they fall asleep. They may also experience shorter naps and night wakings due to their anxiety. While separation anxiety is a normal and important part of a baby's development, it can be challenging for both the child and the caregiver. It is important to remember that each baby is unique, and the intensity and duration of separation anxiety can vary.
To help your 9-month-old cope with separation anxiety, consistency is key. Maintain a predictable bedtime routine and provide a safe and secure sleep environment. Offer plenty of love, cuddles, and reassurance during the day, and practice short goodbyes to help your baby adjust to separations gradually. You can also introduce a transitional object, such as a lovey, to provide comfort and ease feelings of anxiety during sleep. However, it is important to note that lovies are not recommended for sleep under 12 months old due to safety concerns.
As your baby grows and develops, their separation anxiety may evolve. Around 18 months to 2 years old, they may experience another sleep regression related to an even deeper understanding of object permanence, resulting in increased anxiety when separated from their caregiver. Additionally, at this age, they may start to exhibit more complex emotions and behaviors, such as FOMO (Fear of Missing Out), making it challenging for them to fall asleep independently.
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Teething
To help soothe your teething baby and improve their sleep, here are some tips:
- Stick to a consistent bedtime routine: Even during teething, it is important to maintain a healthy pre-bed snack, good hygiene, reading a story, and a consistent sleep schedule. A strong sleep foundation can help your baby handle nights and naps better during teething.
- Provide teething toys or washcloths: Offer your baby solid plastic teething toys or a wet, cold washcloth to chew on. Make sure to supervise your baby when they are chewing on these items.
- Try cold items: Give your baby chilled items, such as a frozen baby feeder or a damp washcloth from the freezer, to numb their gums and alleviate pain. You can also offer them chilled fruit or a soft bagel if they are eating solids.
- Massage their gums: Gently massage your baby's gums with a clean finger to provide temporary relief. You can also use a teething ring or chilled washcloth for the massage.
- Use over-the-counter pain medication: Consult your pediatrician or dentist about giving your baby an appropriate pain reliever, such as infant acetaminophen or ibuprofen. These medications are typically recommended for babies older than 6 months, with the correct dosage administered.
- Create a soothing environment: Turn off screens emitting blue light an hour before bedtime to promote melatonin production. Keep the room temperature between 16°C and 20°C for optimal sleep. Cuddling and skin-to-skin contact can also provide comfort and a feeling of safety for your baby.
- Distract your baby: White noise can help distract your baby from pain and discomfort, aiding in falling asleep.
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Illness
In addition to physical ailments, your 9-month-old may also be experiencing emotional milestones that impact their sleep. Separation anxiety is common at this age, as they begin to understand that you are a separate individual, and being apart from you can be scary. This may cause your baby to fuss or cry more when you leave the room, even during sleep times.
It's important to remember that sleep regressions are normal and temporary. If your baby is unwell, ensure they receive the necessary medical attention and care, and maintain a consistent sleep schedule as much as possible. Consult your pediatrician if sleep disturbances persist beyond six weeks or if you have concerns about your baby's health.
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Lack of routine
A consistent daily routine is important for your 9-month-old's sleep. A lack of routine can cause sleep problems like waking up at night and refusing naps. It is important to note that the routine should be consistent yet flexible, as being too rigid can also be detrimental. For example, if your baby is still taking three naps a day, this could be the reason for their sleep issues. Most babies this age should sleep 12–16 hours per day, including a stretch of 9–12 hours at night. They will likely still take two naps per day, but this may vary depending on the baby. Some babies nap for 30 minutes, while others nap for up to 2 hours.
If your baby is taking more than two naps because the naps are short, try to stretch the wake windows and drop a nap. You can do this by gradually moving their bedtime earlier, aiming for around 6:30 pm. This will give you 3.5 hours of awake time before bed, which is ideal. It is also important to limit screen time and sugars (including fruits and yogurt) before bed.
If your baby is struggling with separation anxiety, it is best not to start any new habits or patterns that you do not want to maintain. For example, if your baby is only able to fall asleep while being held, this may become a habit that is difficult to break. Instead, you can try soothing your baby without picking them up, or offering a few loving words from the bedroom door, encouraging them to fall asleep independently.
If your baby is teething, this could also be disrupting their sleep. To help with this, you can try pain-relief strategies such as a frozen washcloth dipped in apple juice or ask your doctor about giving ibuprofen or acetaminophen 30 minutes before bed.
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Frequently asked questions
There could be several reasons for this. One common issue is the 8-10 month sleep regression, where babies who previously slept well begin to struggle with settling down to sleep and wake up multiple times a night. Teething pain can also interrupt sleep, as can separation anxiety, which tends to be at its worst around 9-10 months. Additionally, a lack of consistency in sleep routines can contribute to sleep problems.
Here are some strategies that may help:
- Establish a consistent daily routine and sleep schedule.
- Ensure your baby's room is at a comfortable temperature, between 68-72 degrees Fahrenheit.
- Use low, rumbly white noise to block out external and internal sleep disturbances.
- If teething is the issue, try pain relief strategies such as a frozen washcloth or ask your doctor about giving ibuprofen or acetaminophen before bed.
- Move your baby's bedtime earlier to 6:30 or 7 pm, limiting screen time and sugars beforehand.
- Encourage your baby to fall asleep independently by putting them down when they are drowsy but still awake. If they cry, stay away for a few minutes to see if they settle down.
Most 9-month-olds should be sleeping around 12-16 hours per day, including a stretch of 9-12 hours at night. They may still take 2-3 naps per day, ranging from 30 minutes to 2 hours each.











































