Hydrolyzed foods are typically for dogs with severe food sensitivities. I would have further testing done before moving to that. I don’t really consider it a long term food to feed either, it’s over priced and full of carbs and hardly any meat protein whatsoever. I also don’t think it’s a very good look for the vet to not want to investigate further into what caused this to happen to your dog and just immediately say it’s due to diet . I would def get a second opinion.
A fresh home cooked (preferably raw tho) diet is ideal. However you have to be sure you’re doing it correctly. A model for raw to follow is the 80/10/5/5, 80% muscle meat, 10% bone, 5% liver, and 5% secretory organ. Cooked is different and I would consult with a nutritionalist before moving to a cooked diet as that is very different than raw.
