Baby Sleep FAQ

A sleep regression is a period when a baby who was sleeping reasonably well suddenly starts waking more often, fighting sleep, or taking shorter naps. It is not a sign that you have done something wrong or that your baby has forgotten how to sleep. It is a normal part of development.

The most significant and well-documented regression is the 4-month regression. This one is permanent - it is not a phase that passes and returns to how things were. At around 4 months, a baby's sleep architecture changes to become more like adult sleep, with distinct lighter and deeper sleep cycles. Babies who relied on being fed, rocked, or held to fall asleep now wake fully between cycles (every 45 to 60 minutes) and need the same conditions to fall back asleep. This is also called a sleep association.

During a regression, the best approach is to lean on your baby's existing sleep cues, be consistent, and try not to introduce new associations that are hard to remove later. Track sleep patterns with the Nap Tracker to identify whether disruption coincides with a developmental leap. For more detail, see our full sleep regressions guide.

Sleeping through the night means different things at different ages. A 3-month-old "sleeping through" might mean a 5-hour stretch. An older baby "sleeping through" usually means 10 to 12 hours. In reality, most babies do not consistently sleep 10+ hours without waking until 6 months or later, and many babies continue waking at least once until 12 months or beyond.

Research shows that about 40% of 12-month-olds still wake at least once per night. This is within the normal range of human development. Babies who are breastfed, going through a growth spurt, teething, or in the middle of a developmental leap may wake more often even after sleeping well for weeks.

If night waking is affecting your family's wellbeing, you can begin gentle sleep shaping from around 4 months, and more formal sleep training from 6 months. See the sleep training question below and the sleep training guide. Use the Sleep Schedule Planner to build an age-appropriate routine.

No - babies must always be placed on their back to sleep until they can roll from back to tummy and tummy to back independently. Placing a baby on their stomach to sleep significantly increases the risk of Sudden Infant Death Syndrome (SIDS). This applies to every sleep, day and night, including naps.

The risk of SIDS is highest in the first 6 months of life. Back sleeping reduces SIDS risk by approximately 50% - it is the single most effective prevention measure available. Side sleeping is also not considered safe because babies can easily roll from their side onto their stomach.

Tummy time when awake and supervised is not only safe - it is essential. It builds the neck, shoulder, and core strength that your baby needs to eventually roll, sit, and crawl. Start with 2 to 3 minutes a few times a day from birth, and gradually increase. For full safe sleep guidance, see our newborn safe sleep section and the safe sleep guide.

Nap length and the number of naps change significantly over the first two years. Very short naps (20 to 30 minutes) are common in the newborn phase because babies complete one sleep cycle and then wake. As babies mature, they learn to link sleep cycles and naps lengthen. A "capped nap" is usually a sign that baby is waking between sleep cycles and needs help linking them - or that the wake window was slightly off.

The wake window - the time your baby is awake between sleeps - is as important as the nap itself. Too short a wake window and baby is not tired enough to sleep well. Too long and baby becomes overtired, which releases cortisol and adrenaline making it harder to fall and stay asleep. Use the Sleep Schedule Planner to build a schedule based on your baby's exact age. See also the sleep by age guide.

Sleep training refers to the process of helping a baby learn to fall asleep independently so they can self-settle when they wake between sleep cycles. Most methods are appropriate from around 4 to 6 months, when babies are developmentally ready. No single method is universally right - the best approach is one that your family can apply consistently.

Sleep training is a parenting choice, not a parenting requirement. Responsive parenting approaches - where you continue feeding or holding to sleep - are also valid. Research does not show that either approach produces better long-term outcomes for children. What matters most is that your family is rested and the approach is sustainable. Read the full sleep training guide for step-by-step instructions on each method, and see the baby sleep hub for age-appropriate strategies.

Heat is one of the most common (and underappreciated) reasons babies in Singapore sleep poorly. Babies are less able to regulate their body temperature than adults. When a room is too warm, your baby will sleep more restlessly, wake more often, and take shorter naps. The ideal sleep room temperature for babies is 24 to 26 degrees Celsius.

Aircon set to 24-25°C in the sleeping room is ideal if available. If using a ceiling or standing fan, keep it at low to medium speed and do not point it directly at baby. Fans are more energy-efficient and still improve sleep quality by promoting air circulation. Do not rely on just opening windows in Singapore - the ambient temperature at night is typically 26 to 30°C, which is too warm for optimal baby sleep.

Signs that your baby is too hot during sleep: sweating, damp hair, flushed skin, rapid breathing, or feeling hot to the touch on the tummy. Do not use the hands or feet to judge temperature - these are often cool even when the core is warm. Overheating is a known risk factor for SIDS, so managing room temperature is also a safety issue, not just a comfort issue. Read more in our Singapore baby sleep guide.

Early waking is defined as consistently waking before 6:00 am. It is one of the most common and frustrating sleep issues. The good news is that early waking usually has a fixable cause - it is rarely just your baby's nature.

Do not go to your baby immediately at 5am. Give them 10 to 15 minutes to see if they will settle back. Some babies babble and then fall back asleep for another hour. If your baby is consistently waking before 6am for more than a week, check out the sleep by age guide and adjust wake windows and bedtime using the Sleep Schedule Planner.

A consistent bedtime routine is one of the most effective tools for improving baby sleep. The routine signals to your baby's brain that sleep is coming, helping them produce melatonin naturally. You can start a simple routine from as early as 6 to 8 weeks.

A good routine is short (20 to 30 minutes), calm, and consistent - the same order, in the same room, every night. It does not need to be elaborate. The key elements are: transition from activity to calm (dim lights, reduce noise), body care (bath 2-3 nights a week), feed, and a sleep cue (song, white noise, or short book). End the routine with your baby drowsy but awake so they learn to fall asleep independently.

Bedtime timing matters as much as the routine itself. Most babies aged 3 to 12 months do best with a bedtime between 6:30 and 7:30 pm. In Singapore, many families have later bedtimes due to both parents working and getting home late. A later bedtime is workable (up to 8:30 pm), but earlier bedtimes are almost universally associated with better night sleep and later morning waking. See the sleep schedules guide for age-specific timings.

The American Academy of Pediatrics (AAP), KKH, and the Health Promotion Board (HPB) Singapore advise against bed-sharing, particularly for babies under 4 months, due to an increased risk of SIDS and accidental suffocation. This is the official medical position in Singapore and most Western countries.

The risks are highest when: the baby is under 4 months old, either parent smokes (even outside the bedroom - third-hand smoke persists on clothing), either parent has consumed alcohol or sedating medications, the mattress is soft or there are pillows and loose bedding, or the baby was born premature or at low birth weight.

Room-sharing (baby's own cot in your bedroom) gives you the closeness and convenience of co-sleeping while eliminating most of the risk. A bedside cot or sidecar cot that attaches to your bed at the same height is a popular Singapore compromise. See our safe sleep guide and the newborn safe sleep section for full details.