[anonymous]

I would stop all supplements. I might try Pro Plan Focus Sensitive Stomach as a base. Add a tablespoon of cooked ground turkey or something.
Add water or/and presoak with water. Don’t free feed (leave kibble out all day)
Two feedings per day, maybe a bite of something for a snack once or twice a day.
Long walks as tolerated.
Give the dog some time to adjust, the symptoms you describe most likely may be stress related.