Arghh.
DS has no interest in potty training. He is quite happy to stay in a dirty nappy for hours and we usually have to bribe/distract him into getting changed. If we broach the subject of pottys/toilets he yells and refuses point blank to consider them. He has in the past pulled down his trousers and sat on them in his nappy, but only a couple of times and we can't figure out how to make him do it again 
He's on the waiting list for an autism assessment as he had a significant speech delay and shows a few other traits, though as he gets older I've started to think he won't meet the criteria for a diagnosis. He does have a few sensory issues, such as refusing to have bare arms or legs.
He starts school in September and they're being supportive, although I know they'd much prefer him to be out of nappies obviously. Anyway, we figured we'd use half term to have another go, but as soon as I tried to put his pants on without a nappy he started crying and shouting. We've compromised on a pull up, which at least is some progress, as he usually won't wear those either!
Not sure what I'm after really...maybe just some reassurance that we'll get there eventually! And possibly that we're doing the right thing in not forcing the issue? The HV said not to push too hard in case it makes things worse, but I don't know if I need to be being more proactive in general? We've tried reading potty training stories with him but he refuses those too. He can be incredibly stubborn
Bribery doesn't work, and he's not interested in star charts. He seems immune to peer pressure too right now, and doesn't seem to care what the Big Kids do. Which I'm sure I'll be grateful for when he's older, but right now it might be handy!
Soo...any advice?