When do babies sleep all night?

Babies usually start sleeping through the night at 4 to 6 months of age.

As they grow, their sleep patterns change. In the early months, babies sleep shorter and wake up more easily, but by 4 to 6 months, their sleep cycles become longer and their brains develop so that they are better able to enter and maintain longer sleep. Proper feeding arrangements help babies sleep through the night. As babies become accustomed to regular feeding times, they do not wake up frequently at night because of hunger. If you eat enough before bed, you will feel less hungry at night, increasing the likelihood of a full night's sleep. A quiet, comfortable, and temperature-appropriate sleeping environment is critical for a baby's full night's sleep. Avoiding noise, keeping the room dark or dimly lit, and using the right mattress and bedding can make babies feel safe and comfortable in their sleep and help them stay asleep. Developing a regular bedtime routine, such as bathing, touching, storytelling, or listening to soft music, can help your baby understand that it's time to go to sleep, relax, and make it easier to sleep through the night.

Note that each baby is unique, some may go to bed early and others may take longer. Parents should not be overly anxious or make inappropriate comparisons with other babies, but should pay attention to their child's development rhythm and give patient guidance and companionship.