My 1.5yo was still waking twice a night for a bottle from what I thought was hunger! Turns out it was more the comfort/habit we hadnt broken. Tough few nights going cold turkey off them but 6 nights later and he's sleeping 7:30pm-6:30-7:00am straight.
For me, getting up and giving him the bottle and him going straight to sleep was the lesser of 2 evils for a long time rather then a few nights of hard work to train but it was well and truely worth it.
I'm a new woman. Now, can you also fix snoring husbands?!