They are looking after ds today and apparently have left him nappy free because he will tell them when he needs a wee. Apart from he didn't and he wee'd on Sil (no kids, not immune to it like me!) He is 2.9 and we've tried to train him twice before. I know he needs to be trained but hes recently had a new sibling and I want to leave it a bit longer. AIBU to think this sort of thing needs prior organisation/discussion? Should I say something when they drop him off?