Osren - it sounds like your boys are doing great! Remember they will be more efficient than your pump, so likely they are drinking at least the amount that you can pump. The main thing is that they are putting on good weight. Some babies are just quicker than others. It sounds like you might be one of the lucky ones with babies who feed quickly (especially since you have your hands full with two!!).
Debo620 - I just didn't feed her! In my dd1's case, it started off as a growth spurt (probably did with you too) but then I believe it became a habit waking, since it was almost the exact same time each night. Is your son waking around the same time? If so, I think Tracy says it's likely to be habit rather than hunger. If you use a pacifier, you could use that instead of feeding. Or use the other BW techniques such as pat/sh or PU/PD. It was at that time that I started a routine, and implemented the DF which you are already doing. If you manage to get him back to sleep without the feed, but then he wakes again within the hour, it's likely that he is actually hungry, and of course then you should feed him. Oh yes, when I was gradually cutting back the early morning feed (5am ish) with dd1 I would only offer 'half' the feed (one side), and then the other 'half' (other side) when I woke her at 7am. Luckily for me she was happy enough to go back to sleep after the 'half' feed. If you are only feeding off one breast per feed, you could try cutting back the amount of time he feeds gradually. Hope something I've said helps!