My almost 3-year-old son has been potty trained for almost a year, at first he had a good handle on when he had to go. After four months ir so of this, he started having accidents all the time. We went back to diapers for a couple of months but I kept taking him to the bathroom now and then. Now we're off diapers again but he started to hold the urge to pee for as long as possible (so as not to get distracted from whatever he's doing), to the point that he'll wet his underwear to postpone going. I've tried telling him to go the minute he feels the urge, but he keeps doing this. Obviously, there's been some accidents as well. One more thing, he won't go to the bathroom with anyone but me or his father. Any ideas on howto deal with this ?