More Nonsense from Holistic Vets about Commercial Therapeutic Diets
Consider getting a second opinion. From what you describe your dog has not responded to treatment or you have not complied with the treatment recommended.
Either work closely with your vet or consult a specialist not Doctor Google.
PS: There are no veterinary healthcare professionals affiliated with this site.
Regarding the weight issues, start walking for at least 1 hour a day or at least three 20 minute walks per day. Certain breeds (such as yours) need more exercise than others.
