If the dog is still pottying inside, figure out the times when this is happening, there may be a pattern. You may need to start taking them out more per hour, or just after a certain activity, like getting a belly rub. If he's having so many accidents, he either doesn't "get" it yet, or needs to go out more. Anyway, potty training isn't natural for dogs, it may take a while to be accident free. How much water is he drinking?6 times an hour? That can't be right. We are with him all the time so we're watching him.