My son will wee in toilets and potty but absolutely refuses to poo anywhere other than a nappy. He has total control - always asks for nappy when required but just won't do it in loo or potty. Have tried suggesting nappy in potty - doesn't work, also new pants for pooing in potty, plus ages of gentle rminders of where bigboys poo. He is just not buying any of it and can't explain why not - just "want to poo in nappy" any top tips?