M.B.
Isn't it YOUR body? I have to say, that I don't know what it is like to breast feed longer then 8 months (that is when I stopped with my daughter, I dried up), but I can't seem to comprehend the fact that you allow your son to fondle you and nurse whenever he wants and you still wake up and nurse at his age. The only one to blame for him waking up, is you. You have encuraged and enforced this habit (that's all it is...a habit)
If your done...then be done. He doesn't give up because you always give in....he knows he will get his way, and that is weakness on your part. Yes, it will be hard for a week or so, but he will eventually forget, and start sleeping through the night. You will have to be consistant and pacient and never give in again. But, you will never know unless you stop breast feeding.
Tell him your boobs have boo boos and there is no more milk. Whatever works, you might even have to go as far as putting band-aids on your nipples.
However you do it, it will be worth the extra sleep and peace of mind.
Sorry to sound so harsh, but sometimes we need a kick in the butt to set things in motion.
I wish you luck!