Hi! Welcome to YT! You will find tons of great information here on feeding. If I may make a suggestion, I would say limit the amount of "treats" he gets, because getting too many is not good for your little guy. Like an above poster suggested I would get a good quality food to feed him and also maybe some nutri cal to make sure he stays on track while you are getting him used to eating food.
Again welcome to YT! Please post pictures when you get a chance, would love to see what your lil angel looks like.