I have many dogs so I have 3 bags open at once. When I started rotating or offering variety, I would serve all three and when one bag would run out (not at the same time), I bought a different food. So they always had “old food” along with “new food” so they didn’t get a transition. I also use different canned food toppers. Now, I wouldn’t suggest making a big jump from 1-2 star food to a 5-star food. That’s too much change. Especially since you’ve only fed one food forever. Just go with the next level up and as he tolerates better food, keep increasing if you wish. I will say I keep my foster food around 3.5-4.5 stars and I give them probiotics and digestive enzymes.
