Day 4 in pants and my 2.8 month dd is doing great. One accident on day 2 and that was it. However she's constantly running to sit on the potty, to pass wind. We had one poo on day 2 and none since. I can't seem to get her to understand she has to sit for a while. I've tried reading, tv etc but she just won't sit. I put a nappy on her but she still kept pulling it down to sit on the potty. She's driving me mad! Any tips?