I have to go back to work in a few days, and I'm so worried that my baby is going to cry all day while I'm gone. She won't go to sleep for anyone but me, and never seems to get full of a bottle. Her dad can hold her for little amounts of time, but once she starts crying there's nothing he can do. Any advice? I feel so bad for having to leave them both, and it kills me to think about her crying non-stop. I know is going to be really hard on both of them.