I sometimes use cottage cheese for my smaller puppies that have trouble adjusting to puppy food. It is an excellent source of calcium and protein and helps to keep their blood sugars in sync. Since your puppy is already used to having it in his diet, I would recommend letting him have a tablespoon each time you feed him until he is 12 weeks old and then gradually decreasing it until there is none.
Good Luck,
Teri
PS..I also give it to moms with large litters.