Wetting regression

[teddiesmum16]

Hi everyone,
Just looking for a little advise as currently pulling my hair out.
Background info - has been dry reliably from 2.5 in the daytime. Dry at night reliably from 3. Incredibly rare to have day or nighttime accidents
My son was 4 in august and started school 2.5 weeks ago (11 school days). On 8 of those days he has come home wet from a wee accident. This is so unlike him. He isn't telling anyone he has had the accidents so is sitting in it for hours which is causing his legs to get sore.
We have discussed with the teacher about reminding him to go more often incase he forgets etc and she has assured me she is doing this.
I am trying hard to not make a 'thing' of it but I can see it is getting him down and feels embarrassed. He has for the past 4 nights wet as well even after 90 minutes.
GP has ruled out infection
I am so stuck on what to do any ideas would be great! We already have a reward chart in place. TIA

Have you asked him why he is having accidents!

Are they just little dribbles? You could put menstruation pads in his underwear each morning so at least he won't be sitting around wet. If not full on than a dribble there are incontinence pads. If it doesn't improve with bribery maybe take him to the GP in case of UTI etc

If more full on *

Might he be struggling emotionally with school? Summer borns often do. You could send him for the mornings only for a while, let him build up to it more gradually (and make sure he doesn't have to try and hold it for a full day). Or bring him home for lunch, so he can go there?

Also, remember that until the term after he turns five he doesn't have to go in at all, so you can keep him home whenever you feel the need. Heck, at this point you could deregister and apply for him to start reception again next year aged 5 (but you'd have to do this before October half term). If possible, I'd take time to find out what's wrong. Sounds like the little mite is having problems.