Feed twice a day normally. If you have a bad stomach, change to something more digestible in protein. Remember not to punish the dog when he smells his own shit after defecation. You should take him away immediately after every defecation. Anyway, it is to divert his attention to give him delicious food, and then deal with the stool or ask his family to help clean it up. Get into the habit of leaving for delicious food as soon as the dog has finished defecating.