We have a new puppy that we got a week ago, he used to be great at going outside but now he’s peeing inside the house again on a regular basis. We’ve gone back to taking him outside every 30 minutes but sometimes he holds it for two hours and sometimes he holds it for 20 minutes. I know he’s a puppy, and he’s not going to be perfect, but he’s been averaging 4 accidents a day. My other family members think that he’s trying to mark his territory, because he pees in different spots each time. This is the first Bernese Mountain dog puppy my family has tried to raise and are undecided on what is happening. Thank you so much for your help!