Day two of pottytraining - I think my son is not emptying his bladder completely when on the potty and that's why it seems like he has to go every 10 minutes or so. When I don't get him in time and he pees in his underwear, it is a pretty big pee but when I catch him before or after he's started, it's only a little bit. After a big pee, he can go at least an hour before he has to pee again. So, does anyone have any suggestions on how I can help him empty his bladder completely while on the potty? Or does he have to get used to the potty and it will just take time? We've tried sitting for up to 15 minutes (which is a very long time in my opinion for a toddler to stay seated on the potty), I've tried running water (faucet), I've tried saying "ssssss" to help him go. None of those things are working.