DS with no bladder or bowel control wants the potty

[TottWriter]

My DS is 23m at the moment, and in the last few days has expressed a desire to start sitting on the potty. Great, we thought, and let him sit on it without his nappy to at least get the idea, though nothing's been coming of it. (He did a poo on it a few months ago after I recognised his 'poo face' and popped him on it just in time, but I always knew that was just a fluke and haven't pushed it at all.)

He doesn't seem to know when he's about to do a wee (or even when he's doing one) and he only knows about poos in the moments when he's doing them. But we figured it wouldn't hurt for him to sit on it if he wanted.

The trouble is, he's now started taking off his nappy by himself (after removing his trousers) and wanting to sit on it, only to get bored and start running around. Yesterday he did actually do a wee on the potty, but I only realised when he got up and there was a puddle - he'd shown no evidence of realising that he was doing a wee, and didn't really connect even when we told him, though we did of course praise him for weeing on the potty and gave him a sticker (I have loads hanging around the house).

The trobule is, I now know he really isn't ready at all, aside from wanting to sit on the damned thing, and when he does he treats it like a special little armchair (fidgeting and playing with his penis ), and then hates having a nappy put back on. I'd love to let him run around bare bummed, but we rent, and don't have any suitable outdoor space. So I'm at a bit of a loss really, and sort of feel that he's hijacking us into potty training him way too early - I don't want to start fighting ovr it with him or it will be harder when the time does come.

My little boy was just the same at 18 months the way we got around it was to buy propper boys plants and put a sanity towel placed in it just for when we were at home and he took his nappie off. We found that if brought him pull-up he just thought they were odd nappies and pull them off again but the 'big boy' proper fabric plants worked great.
He thought they were great as he could pull them off if he wanted to sit on the potty or toilet like a big boy (not that he did a wee he just liked being a big boy and sitting looking at his books there) and he could play with his willey if he wanted 'boys will be boys no matter there age'.
He was not ready for potty training then and he is still have the odd accident at nearly 3 (after months of training when he was ready) but if you can, dont stop his interest at least when your home.
With my little man he just wanted to be nappie free and had no idea for months when he needed the potty and having plant there to stop to much mess and helped alot.

TBH I would just let him - wees and poos are nothing some carpet cleaner can't handle (I know it's a pain ). My DS is 4 in a week and has only been doing it (most the time!) for a month or so - even at nearly 4 he showed no knowledge of needing to go but just letting him kinda sort himself paid off in the end. Try and reward him doing anything in the potty then he may learn to link the feeling of needing a wee (which he doesn't understand yet), to a puddle in the potty to a reward ie. it's all good