Baby girl won’t sleep until she is being held

B&M

My baby girl is almost six weeks old and has to be held all the time. I can’t get anything done and I have two other toddlers to care for. Anyone else have or had this issue. Any advice on how to deal with it. I go back to work soon. If it wasn’t for the other two kids and work I wouldn’t mind it so much because she is the last one and I’m trying to enjoy it as much as possible.