My DS is 2.5, he's been dry during the day since just after his 2nd birthday. I know this is young but he was mentioning it, so I tried him and he did brilliantly. Well, this last week he has wet himself 5/6 times a day. He just stands there weeing saying "I'm weeing mummy". I've tried asking him every half hour or so like we used to and giving him treats when he goes on the toilet/potty. Does anyone have any ideas why he started doing this or any suggestions to stop it happening??
Got the same problem with my DD1 (who is older than your DS).
Couple of things people have suggested is check he doesn't have a urine infection - if you take a sample to the docs they should be able to dip it to test for that easily enough. The other thing is that sometimes they can be so involved in what they are doing that they don't notice they need to go until they are going - apparently this can come and go in phases.