D.M.
Some kids just don't sleep through the night as early/easily. I believe they are all different and have different needs. You could try to go to him in the night and hold him vs. feed him and see if there is another way to soothe him. Also, once you have moved to milk and if you aren't breastfeeding, he will not get that same comfort from eating so may not want to be up. In fact, if you do ever give him bottles of breastmilk, you could try togive him a bottle in the night to see if he is really hungry or wants mommy.