How many times a day should you put a two day old rabbit in with the mother rabbit to nurse?

This is a silly question the baby should be with her mother in a nest constantly and she will feed the babies herself

Is it silly if the baby gets cold because there is only one in the middle of a cold spell and if the mother refuses to feed it or clean it and even attacked it. Do not speak as though the person asking the question is stupid no matter how stupid the question may be, just give an answer. Never insult the person who asks. If the person knows that rabbit mothers never spend all of their time with the babies and that the mother will care for it on her own even if it seems that she isn't. Just give the answer that is asked for.