Fig, I wish I could offer some magical advice, but i wanted to offer sympathy and support

My little guy was exactly the same, except he hardly ate at all. Was still 6-11 feeds per day until 15months maybe? I used Rick Gordon's site to help encourage him to night wean and finally at 15months he was ready. He's also dropped the other feeds all by himself and we are now down to three feeds per day (4am, 11.30, 6pm). He still feeds to sleep but asks for water if he wakes in the night now. Like you I was so over it all, so I really understand, but for us it co-incided with huge stuff developmentally for our DS and when all that was done he slowed right down.