Since he seems to be nursing for comfort and not nutrition during some of these feedings, perhaps you could give him a pacifier when he is not truly hungry, to help him self-soothe (or give him his favorite blankie, or toy, sippy cup of water, etc.). At that age my daughters had weaned themselves, which really bummed me out, but they were taking bottles/food about every 4 or so hours. As I recall, it was 6am bottle followed by some solids, 10am bottle, solids for lunch, 2pm bottle, dinner at 6 with a small bottle afterwards to "top them off," then off to bed with no food/bottle during the night.
I think if you're wanting to cut back, try a pacifier when it's not meal time, and cuddle him. Then he still feels close to you, but you are not serving as his human pacifier! Slowly he will start grabbing the binky (or blankie, or whatever) when he needs comfort, rather than needing you to soothe him every time, and that should solve your problem.
Good luck and enjoy your little guy! =)