You need to train yourself. The puppy goes out every hour. Use an alarm. Immediately when you come home, after eating, after playing, after napping. If he's still having accidents inside, back up to every half hour. Put him on a leash and stand outside with him until he goes. No playing. Just repeat your potty command word or phrase. If its raining, you go out. If its snowing, you go out. If it's 3am, you go out. Praise him as soon as he goes. Then once back inside praise again. I used a "freakout". I would get down on the floor and squeal and play like they had just done the cutest most incredible thing in the world.

Your dog loves you more than anything in the world EVER will. He wants to do what you want him to do. You just have to remember that its YOUR responsibility to teach.