I just started to train my girl couple days ago. So far, there is no progress yet. How long do you let your baby to sit on potty each time? And how often do you let them sit on potty? I usually let her sit on potty for 15 mins each time. I read a book with her. I noticed she would get up from potty and after awhile, she just pee on the floor. 15 minutes sitting on potty, is it too long?