hi.
in addition to becoming more efficient at nursing, I also think the workd is suddenly a really interesting place for a 3 mo. They are able to turn around and look at things, so once the initial hunger is satiated, they like to peer around and see what else is going on. i found with rosie i couldn't nurse her anywhere where she might have other people to look at or anything interesting. If I nursed her upstairs lying down she fed really really well, but she became more of a snacker (and still is) if she's got anything better to do!!
she went overnight for 8 hours from 8 weeks, and now will easily go as long as that during the day if i don't think i ought to initiate nursing sessions!