SA, what's your feeding like during the day? I have no idea if it's a coincidence, but the day I implemented more of a feeding schedule (Gina ford's) was the first night he went back to waking only twice and I've noticed since that my breasts are a lot fuller before a feed. Before I was constantly topping him up, worried he was hungry but now I realize in doing that he was never hungry enough to take a proper full feed. Now he's feeding longer and beforehand my breasts are definitely fuller than they used to be so I think he's having much bigger feeds that are keeping him fuller longer. It may be a coincidence, maybe he was coming out of the bad sleeping anyways, but maybe worth a try?