Parents with newborn infants often try to keep their infant up late, thinking that this technique will encourage the child to sleep through the night. Actually, the complete opposite may be true. Healthy babies who are put down earlier, starting at around 3 to 4 weeks of age, are more likely to sleep through the night sooner, according to many childhood development specialists.
Infants' circadian rhythms develop in the first months of life, and this can give parents the opportunity to establish an early-to-bed routine at a very early stage of the child's development. Infants who go to bed by 7 or 8 p.m. usually awaken less frequently during the night. After a month's time, the child may remain asleep for as long as eight hours.