There is no one answer to the question of what is the best custody arrangement for an infant. Every family situation is different and therefore each case must be considered on its own merits. There are, however, a few general principles that can be applied in most cases.
The first principle is that the best interests of the child should always be paramount. This means that any custody arrangement should be based on what will provide the child with the stability, security and care that they need.
Another important principle is that both parents should have equal access to their child. This ensures that both parents remain involved in their child's life and helps to avoid any feelings of resentment or jealousy.
Finally, it is important to remember that an infant's needs are very different to those of an older child. They require a great deal more care and attention, so any custody arrangement should take this into account.