My son (just turned 3) will use the potty for wees when pantless but as soon as he has pants on he just wees and poos in them. I've had him in pants for 4 days now - should I give up yet and go back into pull-ups when not at home or keep going? I am sure that he will get it at some point but am wondering if I should persevere or wait until he is more ready. I keep reminding him to sit on potty but it makes no difference.