Have the dogs had senior workups? Lab work? Was it within normal limits?
Give the vet a call and ask that she call you back when she has a minute, I’m sure she won’t mind answering your questions. But, dogs that are inactive tend to have difficulty tolerating rich, high protein, high calorie diets…. See what the vet recommends.
PS: Add a splash of water to meals. Most dogs, especially seniors don’t consume enough water. Offer frequent bathroom breaks, opportunities to urinate, otherwise, certain breeds are vulnerable to develop bladder stones (calcium oxalate and struvite come to mind).
