Is there an Order in Sleep? Is it recoverable when lost?

Sleep is of paramount importance in our life: lot of it is spent in sleeping; whose quality heavily affects our awake remaining time. A newborn spends most of its time in sleeping, probably completing its maturation when out of the mother at the latest compatible moment with relative dimensions in delivery. The other necessary function is nourishing, now that the direct umbilical maternal feeding is lost, substituted by her breast (or surrogate): thus the first ordering in sleeping is just to interrupt it when needed in order to nourish, which is at least at the beginning every few hours, the baby needing enough, being not yet able to get a lot each time.