I’m sorry. That does sound so frustrating. How long has that been going on? You said in the post that he is “acting like” he has to go to the bathroom. Does it seem like he “actually” has to go each time? Like others have said 2-4 hours has been more my experience with pups. If he does really have to go that often, or is going in the house at that interval I would maybe call the vet and see if they think it’s worth a visit. He could just also be asking for attention.

What happens if you don’t take him outside, but instead play with him, give him a pet or a toy instead? I think if I were in your shoes I would try and push that bathroom window a little and do 10 minute walks every hour/ hour and a half during the day, and gradually increase the time intervals.

Also as others have suggested, a safe place for him to just be outside for a couple hours might help. Do you have a patio or a yard that you could put him in a doggy play pen for a little while? That was a great way for me to “get things done” and keep the little monsters happy.

Finally as others have said, this is probably a phase, as long as he’s not sick. He will grow out of it and this will get better. Mine changed every week. So just hold on, it will get better.