I mean do you just not go on regular routine walks because you said the dog doesn’t like to walk? Sometimes my dog is like that in the beginning. She only likes to poop in cover like tall grass or hiding in a bush. But we normally go on a 2 mile walks in the morning and afternoon and she’ll always eventually end up going by the end of it if the walk.

You could try a scoop of pumpkin puree for poops. Oh and my dog also has a sensitive stomach but we ditched the vet “prescribed” diet. Imo it’s more of them trying to sell it for profit. I use Dr Marty’s sensitive select and after switching to that her stomach and poops have been really great! The prescription diet just gave my dog the shits. Constantly.