how to potty train a 3 year old boy that refuses
1 Just take him to the potty and sit him on it. 2  Sit him on the potty until he goes or for a reasonable amount of time (5 minutes). 3  After sitting on the potty, set a timer for 30 minutes if he didn't potty, 1 hour if he did. Sit him on the potty until he goes or for a reasonable amount of time (5 minutes). 2  After sitting on the potty, set a timer for 30 minutes if he didn't potty, 1 hour if he did. 3  Sit on the potty when the timer goes off (this way the timer is the one saying it's time to sit on the potty, not you).