Sleep changes rapidly during the first year of life. Newborns spend much of their time sleeping, but their sleep is spread across the day and night. As babies grow, their internal body clock develops, and sleep patterns gradually become more predictable.

Sleep supports healthy brain development and physical growth. It also plays an important role in how babies learn and respond to the world around them.

Frequent night waking, short naps, and changing sleep patterns are normal parts of infancy. Understanding what to expect can help parents and caregivers support healthy sleep without feeling pressure to establish a perfect schedule.

Sleep is essential for healthy development during the first year of life. Babies grow rapidly, and their brains are constantly forming new connections. Sleep supports this development and helps babies process what they experience while awake.

Getting enough sleep also supports physical growth and early learning. As babies mature, sleep helps them become better able to manage their emotions and respond to the world around them.

Infant sleep also affects the whole family. Frequent nighttime waking can leave parents and caregivers exhausted, especially during the early months. Finding ways to support everyone’s sleep and well-being is an important part of caring for a baby.

Every baby develops at their own pace. Frequent waking and changing sleep patterns do not necessarily mean something is wrong. What matters is that sleep is safe and supports the baby’s health and development.

Infant sleep changes considerably during the first year. Newborns sleep in short periods throughout the day and night. As babies grow, sleep gradually becomes more concentrated at night, while daytime naps become more predictable.

The graphic below illustrates how sleep patterns typically develop:

• Around 1 month: Sleep is spread across the full 24 hours, with frequent waking for feeding and care. Babies have not yet developed a regular day-night rhythm.
• Around 3 months: Longer stretches of nighttime sleep begin to emerge as the internal body clock develops. Daytime sleep remains important, and frequent waking is still common.
• Around 1 year: Most sleep occurs at night, with more predictable periods of wakefulness during the day. Babies still need daytime naps, but sleep patterns are generally more regular.

How much sleep do babies need? Newborns generally need 14–17 hours of sleep across 24 hours. From 4–12 months, the recommended amount is 12–16 hours, including naps.

These patterns are only a general guide. Every baby develops at their own pace, and nighttime waking remains common throughout infancy. There is no single sleep schedule that works for every baby.

Babies are not born with a fully developed internal body clock. During the first months of life, sleep and waking are spread across the day and night, often following feeding needs rather than a regular schedule.

The circadian rhythm, the body’s internal 24-hour timing system, develops gradually. Early differences between day and night often begin to emerge during the first few months. As the body clock matures, many babies start sleeping for longer periods at night and spending more time awake during the day.

Light plays an important role in this process. Exposure to natural daylight helps the developing body clock recognize daytime, while a darker and quieter environment at night supports the difference between day and night.

Regular feeding and caregiving routines can also provide helpful daily cues. Over time, these patterns support the development of a more predictable sleep-wake rhythm.

Every baby develops differently, and occasional disruptions are normal. The goal is not to create a strict schedule but to gently support the body’s natural development.

Healthy infant sleep is not about sleeping through the night as early as possible. It means getting enough sleep for healthy development, following safe-sleep practices, and allowing sleep patterns to mature naturally.

Sleep patterns change quickly during infancy, and many challenges are part of normal development. Understanding these changes can help parents and caregivers respond with greater confidence.

• Frequent night waking: Babies often wake for feeding or comfort, particularly during the early months. Night waking can continue even after longer sleep stretches begin to develop.
• Short or irregular naps: Daytime sleep may be unpredictable at first. Naps usually become more regular as babies grow, although their timing and duration can vary.
• Difficulty settling: Some babies need more help falling asleep or returning to sleep. Hunger, discomfort, or overstimulation can make settling more difficult.
• Changes in sleep patterns: A baby who previously slept for longer stretches may begin waking more frequently. These changes can occur during periods of rapid development, illness, or changes in routine.
• Day-night confusion: Young babies may sleep for longer periods during the day and remain more awake at night while their internal body clock is developing.
• Caregiver sleep disruption: Frequent nighttime care can affect parents’ sleep and well-being. Sharing caregiving responsibilities and seeking support can help families manage this period.

Not every sleep difficulty requires treatment. However, persistent problems or changes accompanied by feeding difficulties, breathing concerns, or unusual behavior should be discussed with a pediatrician.

Healthy infant sleep develops gradually. While parents cannot control exactly when or how long their baby sleeps, they can create a safe and supportive environment that encourages healthy sleep patterns.

Small, consistent habits can help:

• Let daylight signal the start of the day. Open the curtains in the morning and spend time outdoors when possible. Natural daylight helps the developing body clock learn the difference between day and night.
• Keep nighttime calm. Use dim lighting and quiet voices during nighttime feeds and diaper changes. This helps create a distinction between nighttime care and daytime activity.
• Enjoy interaction during the day. Talking, playing, and spending time together during waking periods support healthy development. Age-appropriate activity also helps establish a daily rhythm.
• Build gentle routines. Familiar activities before bedtime, such as feeding, changing, or quiet cuddling, can help babies begin to recognize when it is time for sleep.
• Follow your baby’s needs. Watch for signs of tiredness and respond to hunger or discomfort. Young babies need flexibility, and feeding and sleep schedules will change as they grow.
• Expect changes along the way. Growth, illness, and developmental changes can temporarily disrupt sleep. A routine that works well one month may need adjusting the next.
• Make every sleep a safe sleep. Always place your baby on their back in a crib, bassinet, or other approved infant sleep space with a firm, flat mattress. Keep pillows, loose blankets, and soft objects out of the sleep space.
• Share a room, not a bed. Keeping your baby’s separate sleep space in your room for at least the first six months makes nighttime care easier while supporting safer sleep.
• Look after your own sleep, too. Caring for a baby can be exhausting. When possible, share nighttime responsibilities and ask family members or trusted caregivers for help.

There is no need to aim for a perfect sleep schedule. Gentle routines and a safe sleeping environment can support healthy sleep while allowing your baby to develop at their own pace.

Creating a safe sleep environment is one of the most important ways to protect your baby. Following a few simple precautions can help reduce the risk of sleep-related injuries and sudden infant death syndrome (SIDS).

• Always place your baby on their back to sleep, for naps and at night, until their first birthday.
• Use a firm, flat sleep surface, such as a crib or bassinet with a fitted sheet. Keep pillows, loose blankets, bumpers, and soft toys out of the sleep space.
• Share a room, not a bed. Keep your baby’s separate sleep space in your room for at least the first six months.
• Avoid overheating. Dress your baby comfortably for the room temperature and keep their head uncovered during sleep.
• Avoid sleeping on sofas or armchairs with your baby. These surfaces are particularly dangerous for infant sleep.

Safe sleep practices are important for every nap and nighttime sleep, even as your baby grows and sleep patterns become more predictable. For more information view our page on sleep safety in infants.

You do not need to know what is causing your baby’s sleep difficulties before asking for help. Talk with a pediatrician or healthcare professional if sleep concerns persist, become more frequent, or begin to affect your baby’s health or daily activities.

Many infant sleep difficulties are part of normal development, but some may need further assessment. Getting support can help you understand what is typical for your baby’s age and identify problems that may need attention.

Consider seeking medical advice if your baby:

• Snores regularly or has noisy breathing during sleep
• Has ongoing difficulty feeding or is not gaining weight as expected
• Seems unusually sleepy or less responsive than normal
• Has persistent difficulty settling or appears uncomfortable during sleep
• Has sleep problems associated with reflux, pain, or another health condition
• Experiences significant changes in sleep alongside changes in feeding or behavior

Your own well-being also deserves attention. If disrupted sleep is affecting your ability to cope or care for your baby safely, talk with a healthcare professional about available support.

Red flags: Some symptoms require urgent medical attention:

• Breathing difficulties: Your baby is struggling to breathe, has repeated pauses in breathing, or develops blue or gray lips or skin. Seek emergency medical care.
• Difficulty waking: Your baby is unusually unresponsive, cannot be woken normally, or appears limp. Seek emergency medical care.
• Signs of dehydration: Your baby is feeding poorly and has significantly fewer wet diapers than usual. Seek prompt medical assessment.
• Fever in a young infant: A temperature of 100.4°F (38°C) or higher in a baby younger than three months requires immediate medical assessment.

If your baby seems seriously unwell, seek urgent medical care rather than waiting for sleep patterns to improve.