The best advice I can give you is to put 1 teaspoon of colloidal silver in your dog's water bowl. Colloidal silver has never failed me with any of my dogs and this includes making a fatty tumor that my Misty had totally disappear.
Give this a try. It has worked in a matter of a day or two in my animals. You should see improvement rather quickly.
I wish you the best, and let me know if you follow this path and how it worked.