I have a 3 week old son and he struggled with BF early on because I didn't have a strong output. My LC suggested that I wake him every 3 hours during the day and to pump immediately after and every 4 hours at night and pump afterwards (partly because he didn't want to nurese and he was losing too much weight). MY milk supply is now strong, however my son still prefers to eat from the bottle when he is very hungry (I guess there is too much work involved at the boob). I still continue to offer the breast but he doesn't always take it.
I guess my question is, would you continue to wake him or should I let him sleep? He is a big boy - 9 lbs 10 oz and is back at his birth weight.