Infant Sleep Problems: What's Normal and What Helps

How much sleep do babies need?

These are ranges. Babies vary widely, and many healthy 6 to 12 month olds still wake once or twice at night, especially breastfed babies.

Why babies wake at night

Normal reasons

• Hunger: young babies have small stomachs and need frequent feeds, especially during growth spurts around 2 to 3 weeks, 6 weeks, 3 months and 6 months.
• Short sleep cycles: babies cycle every 40 to 60 minutes and briefly surface between cycles. If they need help to fall asleep, they may need the same help each time they surface.
• Sleep associations: a baby who always falls asleep feeding, rocking or being held may cry for the same help overnight.
• Developmental changes: the "4-month sleep regression" happens as sleep matures into adult-like cycles. Rolling, sitting, crawling and separation anxiety (around 8 to 10 months) can also disrupt sleep.
• Overtiredness: too-long awake times make settling harder.
• Environment: too hot, too bright, noisy, or a wet diaper.

Medical causes

• Colds and blocked noses: babies breathe mainly through the nose, so congestion disturbs sleep. Saline drops and gentle suction help.
• Ear infections: waking and crying after a cold, often with fever. See middle ear infection.
• Reflux: spitting up is normal and rarely the cause of poor sleep. Reflux disease (with poor weight gain, feeding refusal or back arching) is less common. See GERD.
• Colic: long bouts of crying, often in the evening, in otherwise healthy babies under 4 months.
• Cow's milk protein allergy: crying, eczema, vomiting, mucus or blood in stools.
• Eczema: itching wakes babies.
• Teething: may cause short periods of fussiness, but not high fever or prolonged illness.
• Obstructive sleep apnea: rare in infants but possible with large adenoids, Down syndrome or facial differences; snoring with pauses and gasps.

Safe sleep for babies

Safe sleep reduces the risk of sudden infant death syndrome (SIDS) and suffocation. The American Academy of Pediatrics recommends:

• Place your baby on their back for every sleep, naps included, until age 1.
• Use a firm, flat mattress in a crib, bassinet or play yard that meets safety standards, with a fitted sheet only.
• Keep pillows, blankets, bumpers and soft toys out of the sleep space.
• Room-share without bed-sharing, ideally for at least the first 6 months.
• Do not let babies sleep in car seats, swings, slings or inclined products outside of travel; move them to a flat surface.
• Avoid overheating; dress the baby in one more layer than an adult would wear. A wearable blanket is safe.
• Offer a pacifier at sleep time once breastfeeding is established.
• Keep the baby's environment smoke-free, and avoid alcohol and drugs that impair your alertness.
• Never sleep with a baby on a sofa or armchair.

What helps babies sleep better

Newborns (0 to 3 months)

• Feed on demand. Night feeds are expected and important.
• Help set the body clock: bright light and activity in the day, dim light and quiet feeds at night.
• Swaddle safely if your baby likes it, and stop once they show signs of rolling (usually around 2 to 4 months).
• Watch for sleepy cues such as yawning, staring and fussing, and start settling then.

Older babies (4 to 12 months)

• Bedtime routine: the same 20 to 30 minutes each night (bath, pajamas, feed, book, song, bed).
• Drowsy but awake: put your baby down sleepy but awake so they learn to fall asleep in their crib.
• Consistent schedule: similar bedtime and wake time each day.
• Age-appropriate awake windows: roughly 1.5 to 2.5 hours at 4 to 6 months, 2 to 3.5 hours at 6 to 12 months.
• Gentle sleep training is an option from around 6 months for families who want it. Methods range from gradual retreat (moving your chair further away over nights) to timed checks. Studies show no long-term harm to attachment or emotional health.

Look after yourself

Sleep when you can, share night duties if possible, and accept help. Exhaustion increases the risk of falling asleep with your baby in an unsafe place. Persistent low mood or anxiety can be postpartum depression, which is treatable.

Frequently asked questions

Is it normal for a baby to wake up every 2 hours?

Yes, for newborns and young babies, who need to feed often. Many babies still wake every 2 to 3 hours at 4 months, especially during the sleep regression or growth spurts. If waking is frequent and your baby is also feeding poorly, not gaining weight or seems unwell, see your pediatrician.

When do babies sleep through the night?

"Sleeping through" usually means a 6 to 8 hour stretch. Many babies reach this between 6 and 12 months, but some do earlier and many breastfed babies wake once or twice into the second year. All of these patterns can be normal.

What is the 4-month sleep regression?

Around 3 to 5 months, babies' sleep matures into adult-like cycles with lighter phases. Babies wake more between cycles and may need help to resettle. It is a developmental step, not a problem, and settles over a few weeks, especially with a consistent routine.

Can a baby sleep on their side or stomach?

No. Babies should be placed on their backs for every sleep until age 1. Once a baby can roll both ways independently, you can leave them in the position they choose, but always start on the back.

When should I worry about my baby's sleep?

See a doctor for snoring with pauses or gasps, noisy or labored breathing, fever, poor feeding, fewer wet diapers, persistent vomiting, poor weight gain, or a baby who is unusually hard to wake. Call 911 for breathing pauses with color change or a limp baby.