I am afraid I agree with others that you should definately try others food and definatelt use a giant breed puppy food as it’s so important for their growth, there are a lot of info on this forum about that.
My giant breed puppy has the same soft stools problems from 6 months to 10 months old. We did a stool test and did not find anything abnormal. So the Vet put him on the Hill Hills Science Diet ID prescription diet. His stools formed up right away. But I did not want to stay on this food forever.so we tried others food, and yes his stools got soft again. But slowly he is better now at 11 months old. He did not do well on Fromm Gold Large Puppy. But did ok with zholistic Select and Nulo, and Nutro with less ingredients. He also gets a probiotic, fortuflora each morning.
Hope this helps.
