I usually have 3 different bags of food open at once and either feed one at a time or mix some of it up in a large container. I also have a dozen different canned foods I’ll use as toppers. Sometimes I even give them some dehydrated foods (rehydrated, of course) mixed with some kibble and I also give them freeze dried foods as well. Hopefully once you start offering a variety, your dog will be able to eat something different at each meal without a problem. Adding probiotics and digestive enzymes will help.
