My boy is 12 weeks old and I have taught him to hit the bells on the door knob when he wants to go out. But recently (past three days) he has decided that each time he hits the bells, he goes outside, he'll pee and then lay down and won't get up unless I coax him with a toy or treat. When I go to pick him up, he rolls over for a belly rub. I have tried to drag him to get up, but he refuses. I don't want to ignore the him hitting the bells because he may have an accident. Is this playing or am I missing something with leash training? Any advice?