Herbie Murray
Sleep is crucial for a baby's growth and development. However, the sleep needs of babies vary, and newborns cannot tell the difference between day and night. By the time a baby is 12 weeks old, they are likely to be sleeping better through the night, but they will still wake up a few times for feeds. While there is no set sleep schedule for a 12-week-old baby, they may nap four times a day and sleep for a total of 10 to 18 hours in a 24-hour cycle.
| Characteristics | Values |
|---|---|
| Sleep duration | 14-17 hours in a 24-hour cycle |
| Sleep cycles | 50-60 minutes |
| Active sleep | Babies move around and grunt |
| Quiet sleep | Babies sleep deeply |
| Wake up | At the end of each cycle |
| Sleep pattern | No fixed pattern yet |
| Nighttime sleep | Still wakes up for feeds |
| Daytime sleep | 4 naps of up to 2 hours each |
| Night weaning | Not required |
| Self-soothing | Not yet, needs help to settle |
| Sleep regression | Occasional sleepless nights |
| Sleep cues | Yawning, rubbing eyes, looking away |
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What You'll Learn
Sleep patterns and cycles
At 12 weeks, your baby is still too young to establish a solid sleep pattern or routine. However, you can help them by introducing a simple bedtime routine into their daily life. A newborn's sleep needs vary, just as the sleep needs of older children and adults do. Your baby might be doing well with more or less sleep than other babies of the same age. Their mood and well-being are often good indicators of whether they are getting enough sleep.
Young babies sleep in cycles that last 50-60 minutes. Each cycle is made up of active sleep and quiet sleep. During active sleep, babies move around and grunt, and during quiet sleep, they sleep deeply. At the end of each cycle, babies wake up for a little while and might grizzle or cry. They might need help settling for the next sleep cycle.
From 2 to 3 months, babies start developing night and day sleep patterns. They will begin to enter deep sleep at the start of their sleep cycles. Babies 4 to 12 months old should sleep 12 to 16 hours a day, including naps. Getting this much sleep supports their health and growth. From about 6 months old, your baby's sleep patterns will become more like yours. They'll sleep up to a total of 10 to 16 hours a day. During the day, they may sleep for 2 to 4 hours, with a longer sleep at night for up to 12 hours.
Some babies begin to sleep through the night as early as 10 to 12 weeks, but others may not sleep through the night until much older. Usually, babies younger than 6 months wake up every three to four hours because they're hungry. Most babies start sleeping through the night by 6 months, which means they can sleep for five to six hours at a stretch without feeding.
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Daytime and night-time sleep differences
A 12-week-old baby is still too young to establish a solid sleep pattern or routine, but you can help them by introducing a simple bedtime routine into their daily life. Generally, newborns sleep about 8 to 9 hours in the daytime and about 8 hours at night, but they may not sleep more than 1 to 2 hours at a time.
During the day, babies might have a few naps — up to 2 hours each. At night, some babies will sleep up to 8 hours, while others will still wake up. From about 6 months old, your baby's sleep patterns will become more like yours. They'll sleep up to a total of 10 to 16 hours a day. During the day, they may sleep for 2 to 4 hours, with a longer sleep at night for up to 12 hours.
Babies sleep less as they get older. By the time your baby is one year old, they’ll probably sleep for 11-14 hours in every 24 hours. Sleep during the night: From about 6 months, most babies have their longest sleeps at night. Most babies are ready for bed between 6 pm and 10 pm. They usually take less than 40 minutes to fall asleep, but some babies take longer. At this age, baby sleep cycles are closer to those of grown-up sleep, which means less waking at night.
Daytime sleep: From around 6 months, babies develop many new abilities that can affect their sleep or make it more difficult for them to settle to sleep. Babies learn to keep themselves awake, especially if something interesting is happening or they’re in a place with a lot of light and noise. Settling difficulties can happen at the same time as crawling or pulling to stand. You might notice your baby’s sleep habits changing when they start moving around more. This might happen because your baby gets into an uncomfortable position and needs your help to resettle.
If your baby is wakeful and grizzly and getting much less sleep than other babies, they might need more opportunities for sleep. If your baby is over 6 months old and is waking up 3-4 times a night or more, you might want to think about phasing out some of their sleep habits.
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Sleep and growth
At 12 weeks old, a baby's sleep patterns are still developing and may vary from day to day. During this stage, it is common for babies to take several short naps throughout the day and have longer stretches of sleep at night. On average, a 12-week-old baby typically sleeps a total of about 14 to 15 hours in a 24-hour cycle. However, this can range from 12 to 17 hours and still be considered normal.
Sleep plays a critical role in a baby's growth and development. Here are several ways that sleep contributes to a 12-week-old baby's growth:
Brain Development: Sleep is essential for brain development, particularly during the early stages of life. During sleep, the brain forms new neural connections and consolidates memories. Adequate sleep supports the development of cognitive functions, including language skills, problem-solving abilities, and emotional regulation.
Physical Growth: Sleep also contributes to physical growth. Growth hormones are released during sleep, promoting tissue growth and repair. This is crucial for a baby's rapidly growing body, including bone and muscle development.
Immune System Function: Getting enough sleep strengthens the immune system. During sleep, the body produces cytokines, which are proteins that help fight infections and inflammation. A well-rested baby is better equipped to fight off illnesses and recover from immunizations.
Motor Skill Development: As 12-week-old babies start becoming more active and engaged with their surroundings, they need sufficient sleep to support their motor skill development. Sleep helps their brains integrate new movements and refine existing ones, contributing to milestones such as rolling over, sitting up, and eventually crawling.
Emotional Regulation: Sleep also plays a role in emotional development and regulation. Well-rested babies are generally calmer and more receptive to stimulation, which aids in their social and emotional growth. They are better able to interact with their caregivers and respond positively to their environment.
To support healthy growth and development, it is important to establish a consistent sleep routine for your 12-week-old baby. This includes creating a soothing sleep environment, recognizing your baby's sleep cues, and providing opportunities for age-appropriate daytime naps and longer stretches of nighttime sleep. Remember that every baby is unique, so adapt these guidelines to meet your baby's individual needs.
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Self-soothing
At 12 weeks, your baby is still too young to establish a solid sleep pattern or routine. However, you can help them by introducing a simple bedtime routine into their daily life. During this time, your baby will sleep on and off during the day and night, sleeping for a total of 14-17 hours in every 24 hours.
Consistent sleep times and a calming environment
A consistent sleep routine and a calming environment can help your baby settle more easily. Consistent sleep times can teach your baby's body to expect sleep, and a comfortable and safe environment is key to helping your baby fall asleep and stay asleep.
Pacifiers and soft toys
Pacifiers can help your baby self-soothe, but it is recommended to limit their use to naptime and bedtime and combine them with other methods like white noise and a consistent routine. This will prevent your baby from relying solely on the pacifier. If your baby is older, a soft toy or blanket they have an attachment to can help with self-soothing.
Feeding
If your baby falls asleep while drinking from the bottle or breast, they are not actually self-soothing or learning to self-soothe. Moving the bedtime feeding session to an earlier part of the bedtime routine can encourage your baby to learn to self-soothe while ensuring they get enough food. Stop feeding if you see your baby getting sleepy, and gently burp them to wake them up a little before using other self-soothing techniques to help them calm down.
Anticipating your baby's needs
By anticipating your baby's needs instead of reacting to them, your baby will be more likely to end the evening in a happy mood, which will make it easier to fall and stay asleep on their own. If your baby falls asleep in your arms and is then moved to their crib, they may become distressed, making it harder to self-soothe back to sleep.
Remember, self-soothing is a gradual process, and it is normal for young babies to need help falling asleep. Every baby is different, and no one solution will work for everyone.
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Sleep and feeding
At 12 weeks old, your baby is still too young to establish a solid sleep pattern or routine. However, you can help them by introducing a simple bedtime routine into their daily life. A sample sleep schedule for a 12-week-old baby assumes that they will nap four times a day, not including night-time feeds. At this age, babies sleep on and off during the day and night, and most sleep for 14-17 hours in every 24 hours. Young babies sleep in cycles that last 50-60 minutes, and at the end of each cycle, they wake up and might grizzle or cry. They might need help settling for the next sleep cycle.
From 3 to 6 months of age, your baby will start to have less 'active' sleep and more 'deep' sleep. They will begin to enter deep sleep at the start of their sleep cycles. Your baby might sleep for a total of 10 to 18 hours, with daytime naps of up to 2 hours each. From about 6 months old, your baby's sleep patterns will become more like yours, sleeping up to a total of 10 to 16 hours a day.
From 6 to 12 months, most babies tend to sleep better, sleeping for around 9 to 15 hours a day. They will sleep less during the day and longer at night. By the time your baby is one year old, they will probably sleep for 11 to 14 hours in every 24 hours.
Babies need sleep to grow and develop well, but their sleep needs vary. Your baby's mood and well-being are often a good guide to whether they are getting enough sleep. If your baby is wakeful and grizzly and getting much less sleep than other babies, they might need more opportunities for sleep. If your baby is over 6 months old and is waking up 3 to 4 times a night, you might want to think about phasing out some of their sleep habits.
In terms of feeding, by 12 weeks, your baby is becoming an expert, and they will finish feeding much faster, sometimes in as little as 5-10 minutes. For the next few weeks, your baby may start to become distracted during feeds, and this will peak at around four months old. If your baby is bottle-fed, they should have 150 ml/kg/day of formula. For a breastfed or mixed-fed baby, you should see around six wet nappies a day, which shows they are well hydrated and feeding the right volume.
From four to six months of age, you can start to introduce solid foods. Starting solids at four months can indicate any allergies, especially if your baby has eczema or there is a family history of allergies.
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Frequently asked questions
Babies need sleep to grow and develop well, but the amount of sleep they need varies. Most babies sleep for 14-17 hours every 24 hours. This includes daytime naps, which can last for 30 minutes to 2 hours.
While your baby is too young to establish a solid sleep pattern or routine, you can help them by introducing a simple bedtime routine. You can also follow your baby's sleepy cues and wake windows so they go down for a nap or bedtime before getting cranky.
It's natural and common for babies to wake up throughout the night. They may wake up once or twice, or as often as six times. They will still wake up a couple of times for night feeds.
