well, it seems like I've managed to reduce my supply, because neither breast is ever engorged at any point during the day anymore. Also, for the last 3 feedings of the day he basically got on the breast and wanted to nurse for a loooong time, around an hour or so, possibly more. He would sometimes seemed frustrated and I got the feeling that he wasn't getting enough milk when he wanted it (maybe he's so used to getting such a fast flow of milk). But boy were my boobs sore and worn out afterwards! I hope that I haven't reduced my supply too much, because the one-hour feedings are pretty draining. I did feel several letdowns during the whole feeding, and he would FINALLY seem satisfied, so I suppose he did eventually get enough milk.
After that one yellowish poop they've been green again. I sure hope this will change soon.
As for wearing him, I do wear him in a Maya wrap but I can't feed him in this or any type of sling/carrier. He needs to be burped at least 2-3 times during a feeding and pops off the breast a lot, so I'm using my hands a lot during the feeding. I keep hoping that when he's older I can manage this so I can be hands-free with my older son while he nurses.