I just wanted to add in that I had to EP from day one because my baby would never suck, and still doesn't really at almost 2 years old. I tried everything, for months and months, and even went to the Newman clinic (I am near Toronto), and nothing worked. However, my daughter was very small at birth, being only about 5.5lbs (she was 38 weeks), yet from a few months on she was taking around 6+oz a feeding (or more in the morning). When she was around 6 months old she was taking in over 8+ oz in her morning bottle (after sleeping 12 hours). She only ever took about 5-6 bottles a day after 6 weeks (not every one was over 6 oz though). I was lucky to be able to pump easily and have lots of milk (80+ oz a day) though. My baby was STTN at about 8 weeks (7 hours) and at about 4 months she was sleeping about 10 hours.
I wonder if one of the reasons why everyones babies seem to eat less at a time, but more often is because they are up at night eatting. My baby wasn't so she needed to get her milk in during the day. Plus since I was able to give her that much milk at once, then she took it. However, she didn't eat more milk then the average baby most of the time.
@kase1025 maybe your baby drinks that much from the breast and therefore expects it from the bottle and you just do not respond as well to the pump.
My baby gained lots of weight in the first 4 months (up to about 15lbs), but then slowed down and was about 19 lbs at 12 months. She loved her milk, and wouldn't eat solid food until I stopped pumping at around 13-14 months.
So I might not be the norm, but my daughter always took big bottles, but fewer of them. So don't worry, all babies are different and just because other people on this board have experienced lower amounts at each feeding, it doesn't mean that your baby needs too.
I never have responded to this debate before, because I feel that everyone thinks that the only way to feed a baby is small, frequent bottles. However, that is not EVERY BABY.