B.S.
From my understanding, the one week with mom-one week with dad is not appropriate for an infant. That is more the case with older children, because it (in the courts mind) makes it easier on the child. I seriously doubt any judge would make that arrangement for an infant. You are more likely to have custody with the father getting visitation. The one week on and off seems to be a fair solution for older kids, but it really isn't. I know many kids in this situation who find it really hard.
As for taking the baby to work...I am not sure what kind of job you have, but you will soon learn you cannot get much done while taking care of the baby.