Very small infants are in the first stages of development and in the process of building a secure attachment. At this age, they have no concept of the world outside of their immediate environment. They need to see familiar faces regularly, to have their needs met promptly and have firmly boundaried routines.
Infants of this age will benefit from spending the majority of their time with one parent but regular and frequent time with the other. Perhaps one to three hours at least twice a week. Care needs to be taken not to interfere with feeding and sleeping patterns and information about the baby's needs and development must be shared with as much detail as possible.