I've been breast feeding for 5 months now, and that I'm back working which is only part-time and even with the 4 hours a day I work it's hard for me to pump enough milk for my baby while I'm gone. I might have to put him on formula, (I really don't want to.) I plan on going back to school and working full time and I just know I won't pump enough milk to keep my baby satisfied. I sent my baby to New Mexico (I'm in california) for a week to be with his dad, and his dad has been giving him formula (soy) because I couldn't pump enough milk for him. He says he's doing good with it, and I have pumped as much as I can while he's been away, but it's not enough.