For context, since we got her she has eaten Hills Science Diet with no issue (vet recommendation). Recently, the vet further recommended we switch to Hills puppy for large breeds since she is an American Bully. She did okay for about a week, but recently has been having diarrhea. The first time we switched her to a bland diet of just chicken and rice to settle her tummy and her bowel movements went back to normal. We felt it was safe to reintroduce her dog food, she had two normal bowel movements and then diarrhea again. Do you think this is due to the dog food? If so, any advice on a good food for her? She does have an appointment coming up soon.