B.B.
My son almost never woke up, for a bottle. We were very lucky and got a great sleeper. The MOST he ever woke up as a newborn was twice. At 4.5 weeks, he stopped waking up, at all. So many people told me I need to wake him up to feed. My pediatrician told me not to. My son was gaining weight properly. He said there is no need to wake and feed a baby, if they are gaining weight and seem happy. I never did wake him and he's great now!!
I didn't breastfeed, but my friend who has an awesome sleeper wakes up and pumps. She has to , or it's very painful.