Dogs, like people, have their own habits. Some people get up early and defecate, while others defecate before going to bed. Generally speaking, after a meal 14 minutes or so, the human body naturally has the desire to excrete. Where's the dog? Something like that If you really want the puppy to excrete regularly, you should take it for a walk in the street regularly. After a while, the habit will be formed.
As for diarrhea, can I exchange dog food? Puppies need special nutrition. It is not enough to feed rice soup and rice soup.