He will get there in his own time. I started potty training my DD at two and it took about two months to be reliably dry. My elder DS I started at the same time, mainly because of the disapproving looks from my Mother, and he became reliably dry on the day he started school just before his 4th birthday. He was and is , extremely bright (although that has nothing to do with early potty training) and perfectly healthy but how I wished I’d ignored my Mothers well meaning but none the less unwelcome hints, and waited until he was ready. It would have avoided a lot of stress, not only for me but also for him.
My youngest DS I started again at 2 and he was even later, he was past 4 before he could go a day without accidents. It really is nothing to do with laziness, perhaps your DIL knows her own child best and knows he’s not ready.
For anyone who is interested this is the latest advice.
www.nhs.uk/conditions/pregnancy-and-baby/potty-training-tips/
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