My Baby Won't Sleep in the Crib
The short answer
Many babies resist sleeping in their crib, especially in the early months. This is a normal preference rooted in biology - babies are wired to seek closeness with their caregiver. While safe sleep guidelines recommend a firm, flat sleep surface, the transition can take time and patience. Gradual approaches tend to work better than sudden changes.
By Age
What to expect by age
Newborns have just spent nine months in the warm, snug, and constantly moving environment of the womb. A flat, still, open crib can feel overwhelming by comparison. Swaddling (until your baby shows signs of rolling), white noise, and warming the crib sheet briefly before placing your baby down can help bridge the gap. The "drowsy but awake" approach can be introduced, though many newborns are not yet developmentally ready for it.
This is often the most effective window for practicing crib sleep. Your baby's startle reflex is fading, circadian rhythms are maturing, and sleep cycles are becoming more organized. A consistent bedtime routine - the same 3-4 steps in the same order every night - signals to your baby that the crib means sleep. If your baby was previously sleeping in a bassinet, swing, or your arms, transitioning gradually (starting with one nap per day in the crib) can help.
Separation anxiety often peaks around 8-10 months, which can make crib sleeping harder even for babies who previously accepted it. At this age, object permanence is developing - your baby now understands you exist when you leave the room, and they may protest. Brief, consistent check-ins can reassure your baby while reinforcing that the crib is a safe place to sleep.
Toddlers who resist the crib may be experiencing separation anxiety, boundary testing, or fear of missing out. Maintaining a firm and loving bedtime routine is key. If your toddler is climbing out of the crib, it may be time to transition to a toddler bed for safety. A visual bedtime routine chart and an "OK-to-wake" clock can be helpful tools at this stage.
What Should You Do?
When to take action
- Your baby fusses for a few minutes when placed in the crib but eventually settles
- Your baby prefers being held but will sleep in the crib after a consistent bedtime routine
- Crib resistance increases around developmental milestones or when your baby is teething or ill
- Your baby is otherwise healthy, feeding well, and gaining weight appropriately
- Your baby consistently screams inconsolably in the crib and only calms in an upright position, which could suggest reflux or another source of discomfort
- You are so exhausted from holding your baby during sleep that you are falling asleep in an unsafe position (on a couch, recliner, or with pillows and blankets)
- Your baby seems to have difficulty breathing when lying flat in the crib
- Your baby is in respiratory distress - flared nostrils, rib retractions, or blue-tinged skin - when placed flat
- You find yourself falling asleep while holding your baby on a sofa or armchair, which is a significant suffocation risk and requires an immediate safe sleep plan
Sources
Related Resources
Related Sleep Concerns
Baby Only Napping 30 Minutes
Short naps of 30-45 minutes are extremely common in babies under 6 months. Your baby is waking at the end of a single sleep cycle and has not yet learned to link cycles together during the day. This is developmentally normal and typically improves on its own between 5-7 months as the brain matures.
Baby Fighting Sleep
A baby who fights sleep is usually either overtired, undertired, or going through a developmental leap. It can feel exhausting, but it is very common and does not mean anything is wrong. Adjusting wake windows and creating a calming pre-sleep routine are the most effective strategies.
My Baby Grinds Teeth While Sleeping
Teeth grinding (bruxism) is surprisingly common in babies and toddlers, affecting up to 30% of children. It often begins when babies first get teeth and may continue through early childhood. While the sound can be unsettling, occasional grinding is usually harmless and most children outgrow it by age 6. It may be related to teething discomfort, jaw development, or simply exploring their new teeth.
My Baby Moans in Their Sleep
Moaning, groaning, and grunting during sleep are extremely common in babies and are almost always harmless. Babies spend a large proportion of their sleep in active (REM) sleep, during which they naturally vocalize, twitch, and make facial expressions. These sounds typically decrease as your baby's nervous system matures over the first few months.
My Baby Naps Too Much
How much daytime sleep is "too much" depends heavily on your baby's age. Newborns naturally nap frequently and for long stretches, while older babies and toddlers gradually consolidate daytime sleep into fewer, shorter naps. Excessive daytime napping becomes a concern mainly if it consistently interferes with nighttime sleep or if it signals an underlying issue like illness.
Baby Needs Rocking to Sleep
Rocking your baby to sleep is a perfectly natural and loving way to help them drift off. It is not a bad habit - it is responsive parenting. If rocking is working for your family, there is no need to change anything. If you would like your baby to learn to fall asleep with less help, gentle, gradual approaches work best.