need advice

Cassidy
So I go back to work next week and I am looking to put my 1 month old in her room with her sister who is 1 years old how should I go about doing this my 1 month old is very attached to me and lately has been sleeping in my room but like I said I go back next week and I want to make it as easy as possible for my mom since she will be watching them while I am gone .