Some of the Wellness formulas are loaded with potato…I would discontinue. Consider Fromm Classic Adult, add a little water and a topper, a bit of crumbled boiled egg, boiled chopped chicken meat or something.
https://www.gofromm.com/fromm-family-classic-adult-dog-food
PS: do a gradual transition, 1/2 and 1/2, new food and old for at least a couple of weeks.
I would eliminate the milk bones and all snacks at least for the time being. Always have fresh water available 24/7.
I bet the pig ears were the culprit, no good. Stay away from processed snacks. Try a frozen raw carrot (when the dog is stable) not baby carrots, they are bleached/chemically treated and a choking hazard due to their size.
