[anonymous]

Sounds good. I am glad you are working closely with a veterinarian.
My dogs do well on Fromm Adult Classic (1949 recipe) as a base.
https://www.gofromm.com/fromm-family-classic-adult-dog-food

I have also heard good things about Purina Pro Plan Focus Salmon for Sensitive Skin and Stomach
Maybe he would do better on canned food?
I always add a little water and a topper to kibble.