feeding!!!?

My son is 10 1/2 mo old. im still nursing him and i plan on doing it until 1 or so. but he still nurses ALOT!! Like every 2 hrs or soo. he wont take a pacifier or anything and hes on a sippy cup. i think im his comfort. i got him down to only getting up once and sometimes twice at night to eat. but hes not hungry he just wants comfort. its getting really annoying. i tryed to let him fuss and give him some jucie or water and he gets mad and wants to nurse. has this happened to anyone. how can i make him stop nursing for comfort soo much??