My husband stays at home with the baby and she's only been drinking 4oz while I'm at work (8 hours away from her). I nurse her in the morning before I leave & she gets up twice a night to comfort nurse. I'm starting to worry that she's not drinking enough milk. We are using munchkin LATCH bottles which she likes and a size 2 nipple. She just started on solids too but is always given milk first. Any suggestions? Would she do better with a sippy cup?