The best way to do this is to give babies predictable, routine kinds of days.

environmental cues mature the circadian clock more rapidly from the very first days of life, and this is one reason why it’s best to have the baby sleeping in the same room as the caregiver, even during daytime naps. The other reason is that having the baby sleeping in the same room as the caregiver day or night, always on her back, protects

Babies need interaction with parents and other humans; they need to manipulate their environment (to touch things, to feel and move them), and they need to do “problem-solving” activities (such as the eternal “where did it go?” problem-solving of peekaboo).3