I'm exclusively breast feeding and I'm having a hard time pumping at work. I just can't get enough out, and what I get out one day is what my baby eats the next day. I did have some frozen back ups before going to work but they are gone.  My baby is 5 months and seems to eat 4-5oz per feeding. Is this what your babies are eating? She tends to eat every 3 hours, so I need at least 3 or 4 of those bottles per day.  I'm just wondering if she is eating enough or if I have to start thinking on supplementing as my body has a hard time pumping those bottles now. Any thoughts? Advice?