He is 3 in April. Now, obviously I can hold him down and force him to change them, but are there any less draconian methods to incentivise him?
He jsut seems to want nothing to do with anything toilet realted at the moment. After a promising start doing a wee on the potty every night he now refuses point blank to sit on it most of the time, and when he does, he immediately says "I can't".
Now he says he doesn't want to change his "pants" at all. He ends up leaking through to his trousers and then changes his mind 
but he also doesn't tell us when he's done a poo, and rarely cooperates when we change him following one. (He's possibly withholding poos as well; they're certainly less frequent now than they were a month or so ago.)
I've tried with stickers, and even (desperate0 chocolate coins, but he's just not interested. I'm not worried about the potty training; I know it will come in time, but is there a solution to the nappy changing thing that anyone can think of?