Gina Johnson
Sleep is critical for a baby's growth and development. However, the amount of sleep a baby needs varies, and newborns tend to sleep in short bursts of one to four hours, accumulating 14 to 18 hours of sleep per day. As they approach four months, their sleep patterns become more predictable, and they require 12 to 16 hours of sleep over 24 hours. Bottle-fed infants tend to sleep longer at night than breastfed infants, but by nine months, this difference usually disappears. Premature babies' sleep patterns may differ, and they may sleep up to 22 hours a day, depending on their health and how early they were born.
| Characteristics | Values |
|---|---|
| Average Total Sleep for 12-Week-Old Infants | 14 to 18 hours a day |
| Sleep Pattern | Short spurts of 2 to 4 hours |
| Daytime Sleep | 8 to 9 hours |
| Nighttime Sleep | 6 to 8 hours |
| Number of Daytime Naps | 2 to 5 naps |
| Sleep Schedule | A regular sleep schedule can be developed around 2 months |
| Sleep Patterns | Sleep patterns can be unpredictable until 4 months |
| Sleep Consolidation | Babies start to consolidate their nightly sleep around 5 to 6 months |
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What You'll Learn
AAP recommendations for reducing SIDS risk
Newborns to 2-month-olds sleep for 14 to 18 hours a day. During the first two months, babies sleep in bits and pieces, waking throughout the day to feed. In the early weeks, newborns may feed eight to twelve times in 24 hours.
The American Academy of Pediatrics (AAP) has released recommendations for creating safe sleep environments for infants to reduce the risk of SIDS and other sleep-related deaths. Here are the AAP recommendations for reducing the risk of SIDS:
- Have your baby immunized. An infant who is fully immunized may have a reduced risk of SIDS.
- Infants should sleep in the same room as their parents, close to their bed. However, bed-sharing is not recommended as it raises the risk of strangulation, suffocation, entrapment, and SIDS.
- Infants should sleep on their back until they are one year old. Side sleeping is not advised.
- Use a firm sleep surface, such as a mattress in a safety-approved crib. Soft objects and loose bedding should be kept away from the infant's sleep area.
- Avoid using commercial devices like wedges, positioners, and special mattresses, as these have not been proven to reduce the risk of SIDS.
- Exclusive breastfeeding offers the most protection against SIDS, however, any breastfeeding is beneficial.
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Preemie sleep differences
A 12-week-old infant should be getting between 14 and 17 hours of sleep over a 24-hour period. This includes sleep at night and daytime naps. Typically, a baby this age will sleep for two to four hours at a time, waking up to be fed, burped, changed, and soothed.
Preemie sleep patterns differ from those of full-term infants. Preemies may sleep up to 22 hours a day, depending on how premature they are, and they will wake up more frequently to feed. They take longer to string together longer stretches of nighttime sleep (six hours or more) and may not get there until they are 10 to 12 months old. Preemies are more easily overstimulated and may have less energy than full-term babies. They also have different visual and auditory responses to their surroundings.
By 20 weeks of gestational age, a preemie's hearing is fairly well-developed, and by 25 to 28 weeks, they respond differently to various sounds. They show interest in voices, dislike loud noises, and can recognize their mother's voice. By 28 weeks, they can hear sounds of about 40 decibels, and by full term, they can hear sounds as soft as 20 decibels.
Preemies take longer to focus on objects and have less clear vision than full-term infants. They respond to bright light by shutting their eyes or blinking, but in softer light, they can open their eyes and focus on objects. Their vision is nearsighted, and they see best when objects are 8 to 10 inches from their faces.
When it comes to sleep, very young preemies don't move as much or experience as much REM sleep as older preemies. It can be challenging to determine whether they are asleep or awake, as they may grunt and open their eyes briefly before falling back into light sleep. A full-term baby spends 15-20 minutes in deep sleep and 65-70 minutes in light sleep, whereas a young preemie may only spend 2-5 minutes in deep sleep before returning to light sleep. As preemies grow, they gradually increase the amount of deep sleep, indicating healthy brain development.
To support preemie sleep, it is recommended to always place them on their back to sleep and follow safe sleep guidelines, such as room-sharing for at least the first six months and avoiding loose and soft bedding for the first year. Preemies may benefit from using their adjusted age, calculated by subtracting the number of weeks they were preterm from their actual age, to set age-appropriate sleep expectations.
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Breastfed vs. formula-fed sleep patterns
A 12-week-old infant, or a 3-month-old baby, should get a total of about 14 to 17 hours of sleep over 24 hours. This will typically be in short spurts of two to four hours, waking to be fed, burped, changed, and soothed. During this age range, babies will likely sleep eight to 12 hours at night, with the rest occurring during two to five daytime naps.
Now, let's delve into the differences in sleep patterns between breastfed and formula-fed infants.
The sleep patterns of infants can vary based on whether they are breastfed or formula-fed. Research suggests that formula-fed infants tend to wake up less often at night and sleep for longer periods. This is because formula takes more time to digest, leading to longer and deeper sleep earlier in life. On the other hand, breastfed infants may need to feed more frequently, both day and night. However, it's important to note that the total sleep duration over a 24-hour period tends to be similar for both breastfed and formula-fed babies.
Some studies have found that parents of exclusively breastfed infants up to 3 months of age slept more, around 40 to 45 minutes more, than parents of formula-fed infants. Additionally, parents of formula-fed infants reported more sleep disturbances. Breast milk contains the maternal hormone melatonin, which is secreted in higher levels at night and can help breastfed babies sleep better. However, other studies have questioned this association, finding no significant difference in night wakings or night feeds between breastfed and formula-fed infants aged 6 to 12 months.
While the feeding method may play a role in infant sleep patterns, it is not the sole determining factor. Individual differences, age, and environmental conditions also influence sleep. Ultimately, the decision to breastfeed or formula-feed should be based on what works best for the baby and the family, ensuring the baby is well-fed, comfortable, and loved.
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Tracking sleep
A 12-week-old infant typically sleeps for 14 to 18 hours a day. During the first two months, babies sleep in bits and pieces, waking throughout the day to feed. They may sleep for two to four hours at a time.
Tracking your baby's sleep patterns can be a good way to understand their sleep needs and identify any potential issues. Here are some methods and tips for tracking your baby's sleep:
Manual Tracking
Create a simple chart with columns for each day of the week. Divide the days into hourly blocks and mark the intervals when your baby is asleep. Keep the chart for about a week. This will give you a clear picture of your baby's sleep patterns and help you identify any inconsistencies or concerns. You can also record the methods you use to resettle your baby and note what works and what doesn't.
Sleep Tracking Devices
There are various commercial devices available that claim to help track and improve infant sleep. These include cardiorespiratory monitors, wedges, positioners, and special mattresses. However, it's important to note that these devices have not been proven to reduce the risk of Sudden Infant Death Syndrome (SIDS) or other sleep-related issues. Always prioritize the safety recommendations provided by trusted sources, such as the American Academy of Pediatrics (AAP).
Sleep Safety and Environment
The AAP recommends that infants sleep in the same room as their parents, close to their bed. Bed sharing is not advised as it raises the risk of strangulation, suffocation, and SIDS. Immunizing your baby may also reduce the risk of SIDS. To promote healthy sleep, establish a soothing pre-bedtime routine and expose your baby to plenty of daylight during the day. Avoid overstimulating them before sleep.
Understanding Sleep Regressions
Sleep regressions are periods of interrupted sleep that can occur due to growth spurts, development milestones, teething, or adjustments to their sleep schedule. Most babies experience sleep regressions, and they are typically temporary, lasting a few weeks. During these times, your baby may wake up frequently, have difficulty falling asleep, or take longer naps during the day. Sleep regressions can be challenging, but staying consistent with bedtime routines and encouraging healthy sleep habits can help your baby sleep better as they grow.
Remember, every baby is unique, and their sleep patterns may vary. Always consult your pediatrician if you have concerns about your baby's sleep or notice significant changes in their sleep habits.
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Sleep schedule development
A 12-week-old infant is just over 2 months old, and at this stage, a baby's sleep can still be very unpredictable. During the first two months, babies sleep in bits and pieces, waking throughout the day to feed. They typically sleep for short spurts of two to four hours, waking to be fed, burped, changed, and soothed. Newborns tend to sleep 14 to 18 hours a day, and this can be a combination of daytime and nighttime sleep.
From two to four months, sleep patterns are still developing, and this period is considered a transition time between newborn sleep and older infant sleep. As they approach the four-month mark, their brains develop enough to start settling into more recognizable sleep patterns. At this age, doctors expect baby sleep to take on a more regular and predictable pattern.
From four months onwards, infants tend to require anywhere from 12 to 16 hours of sleep per 24 hours. This includes nighttime sleep and daytime naps. It is generally thought that babies start to consolidate their nightly sleeping period at around five or six months of age, making it more likely for them to sleep through the night. However, this milestone can vary, and some babies may not sleep for 6 to 8 hours consecutively even at 6 or 12 months old.
It's important to note that every baby is unique, and there is no one-size-fits-all sleep schedule. Bottle-fed infants, for example, tend to wake up less often at night and sleep for longer periods than breastfed babies because formula takes more time to digest. Additionally, if your baby was born prematurely, their sleep patterns may differ from those of full-term infants, and they may take longer to string together bigger chunks of nighttime sleep.
To promote safe sleep for your baby, it is recommended that they sleep in the same room as their parents, close to their bed. Bed sharing is not advised as it raises the risk for strangulation, suffocation, entrapment, and SIDS. Immunizations are also recommended to reduce the risk of SIDS.
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Frequently asked questions
A 12-week-old infant should get around 14-17 hours of sleep in a 24-hour period.
At 12 weeks, infants typically sleep 8-12 hours at night.
At this age, infants nap for 1-2 hours at a time and have two to five daytime naps.
