I hear you. The Oh Crap book basically made me feel very guilty for not having trained by 30 months. Both mine trained past 3. What’s his speech and communication like? Do you think he understands what’s expected of him? Or do you think he just doesn’t feel the urge?
My oldest refused point blank to even consider a potty at that age and we had to forcibly train at 3 yrs 3 months to eliminate a medical issue (long story, related to stool withholding). He only got with the programme, so to speak, when I made it clear this was happening whether he liked it or not.
I’d say he got to 80% trained within about two weeks but then stuck there for literally a couple of years with lots of accidents - we ended up under the hospital for constipation at one stage. So believe me, I have been there. I will say we are now pursuing ASD assessment and I honestly don’t think he always recognises what his body is telling him.
My youngest got to 80% trained in about 2 days and was full day trained within a couple of weeks.
If it’s really getting to you - take a month or so off. Forget about it until later in April when it’s a bit warmer. Maybe read some books like Pirate Pete or Poo Goes to Pooland or whatever. But then I would have a concerted effort for a couple of weeks, even if you need to take a week off work. I found having mine naked from the waist down, with a potty or mini toilet (I found potties were uncomfortable for a taller 3 year old and we ended up with a mini toilet thing with a removable bowl)to plonk him on whenever I saw a sign, and rewarding with Smarties if he made it in time, was the best way.
If that doesn’t work, it’s probably time to try to get the health visitor involved.