DS1-I woke him every 2hrs when we were in the hospital mainly b/c the nurses came in to wake me up and said it was time. He didn't sleep "well" until he was 18mo even after self weaning from bf'ing at 10.5mo. Even now he wakes sometimes.
DS2-Would feed him when he was brought in from the nursery, but even then it wasn't every 2-3hrs, sometimes they went as long as 4. The last night he was in our room so he could get used to the room being quieter and darker and he fed around 11ish and 2ish and then not until 7am. He was a little jaundice though when he left the hospital and they said that frequent feeding would flush out his system so I did wake to feed until we went to the pedi a couple days later and confirmed that his levels were dropping, then it was demand feed. I got my second 7hr stretch last night and he was just 9wks old yesterday. He is also ebf.
I don't know if the way I fed them in the begining has anything to do with their sleep habits. They are both VERY different children in so many ways already.