R.J.
DO know, after a few months, you WON'T feel full anymore. I felt durn near "empty" at 4 months, but he was still knocking back 20 oz per feeding every 2 hours (breastfeeding study, he was weighed on a nifty super sensitive scale). Say what??? But it's pretty normal when you're well hydrated that after a few months you "deflate" but still produce. This is ALSO when pumping starts to get really hard for a lot of women, and even 2 ounces is TORTURE. But pop the baby on the scale and they're still knocking back the same amount the always have.
DON'T be surprised if your son starts feeding at night. A lot of exclusively BF'd kids will alter THEIR schedule so that they sleep more when you're gone, so that they can eat while you're there. AKA at night. When you're exhausted. And need to sleep. And they are awake-awake-awake-ahhhhhhhh!!!!! What happened to my good sleeper???