My ds (aged 2 and a half) has finally started to show an interest in sitting on his potty/on the toilet - up til now he refused point blank, and I didnt push it. He hates having his nappy changed, so I'd love him to be potty trained, but have no idea how to start. At the moment, he only wants to sit on it once in a blue moon. should I just take his nappies off? any tips please?