DS has just turned three. He was showing signs of being ready for potty training a few months ago. We tried it, it didn't work and was making him upset, so we left it a while. A couple of weeks ago he started showing signs again, so we tried again. It's not going well. He refuses to wear pants and also refuses nappies, so we've compromised on pull-ups. He just refuses to go on the potty or the loo. We've tried leaving him to tell us when he needs it, physically taking him to the potty, reminding him about it. He just refuses. We've tried the pirate Pete book, taking him to choose pants, reward chart, chocolate buttons. But he just refuses the potty, wets himself and the gets upset because he's got wet trousers. But he gets upset if we try and get him to use the loo or potty. Poo is fine, he goes on the potty for that quite happily, but wee is another matter.
What am I doing wrong? He seems ready, his nursery think he's ready, so I don't want to miss an opportunity, but is he really ready? I have a small baby, so I'm unable to give him the attention he needs maybe. Any ideas or tips? Or should we just stop for now?