[anonymously]

I don’t agree with this comment “Vets get very little nutritional education.”
Also, if the vet has been no help, why not seek the services of another vet.
Keep trying till you find one that you like and trust.
If you don’t see improvement in your dog’s condition within a reasonable amount of time, consider consulting a board-certified Veterinary Internal Medicine Specialist….it might be cost effective in the long run.

Below is an excerpt from:”More Nonsense from Holistic Vets about Commercial Therapeutic Diets”
Posted on July 20, 2016 by skeptvet
http://skeptvet.com/Blog/ click on link to find the complete article

“2.Vets know nothing about nutrition-”

“This is particularly hypocritical given that the claims made about the evils of commercial food and the virtues of alternative diets are generally made by—yup vets!— and these folks have no more training or expertise than the rest of us. In fact, the most reliable source of expertise on pet food are board-certified veterinary nutritionists, veterinarians with extensive training in nutrition. However, their claims are casually dismissed with innuendos or accusations about financial bias by vets who themselves make their living selling the stuff they advocate for.”