At different stages of growth, children's needs for sleep are very different. Usually, newborns spend most of the day in a sleep state. As the child grows up, the sleep time will gradually shorten. 0-1 years old At 4 months, most babies have begun to form a more regular sleep. 4-6 months, babies usually take 2-3 naps during the day, 30 minutes to 2 hours each time. 6-12 months, babies usually take two naps during the day, some only sleep 20 minutes at a time, but some have to sleep...