For a little baby like this, I would take several Tbs. dry Canidae, mix with 1 Tbs. canned Canidae puppy and a few drops of warm water. (Reccommend using Canidae products verse the Merrick canned.) Crate him to feed and leave him in there for 15 mintutes. When his 15 min. is up, take him out and take any remaining food away. He needs to understand it's not play time, he can't pick at food and wander off, and he no longer has unlimited access to it. An 11 week old Yorkie whose been free fed, will probably do best to get 3 small meals per day for the next few weeks, if your schedule allows. After a few weeks of being on a consistent feeding schedule, he should become a heartier eater. Some never have good appetites, my Min. Poodle was one who was quite finnicky. Being consistent, not switching his food or feed times and taking it away when he leaves it down, is the key. Good luck!