2 year old sleep troubles

[Elisabeth3468]

I'll start by saying I've never had a baby that sleeps a lot and he is low sleep needs and can stay awake a ridiculous amount of time very easily and never shows any tired cues. I have got to know the specific cues but nobody else would tell.
Anyway since he turned 2 sleep has been awful. Some days he refuses the nap but then can't make it past 5pm (after getting up at 6am) so he will drop off and I'll wake him after 20/30 mins and then he doesn't go to bed until midnight or later.
BUT , on the days he naps then he won't go to sleep either at night (till about 10ish) and then he's up at 5am the next day.
I am so so tired .
Example of today
Wake - 5.30am
Nap - 11.30-1pm
Current time 9.30pm and been trying to get him to sleep for over an hour now.
Never know a child fight sleep so much. I'm so tired because I never get time to myself and he's up SO EARLY.
I don't know what to change ?
I'll also add that I've never been able to get him into a proper routine because he is so unpredictable and just doesn't like to sleep.
Does anyone have any realistic suggestions ?

Could you shorten the nap to an hour or 45 minutes and see if that helps?
I wonder what he doesn't like about sleeping. Could it be outdoor noise (white noise could help), the temperature of the room, the type of blanket, the feeling of being restricted in sleep suits or under sheets? Have you trued variants of light/ dark in his room? Our DC was terrified of the dark at that age and we found a Himalayan salt lamp worked wonders.

Is there a reason you wake him when he falls asleep at 5 after no nap? I think I would let him go to bed super early then push his bedtime back by 15 minutes every few nights until it was a bit more reasonable. Either that, or cap his nap. Try only letting him sleep for an hour

drop the nap but in the transition you need to keep days really calm- ie. Tv and books, no park trips etc. then slowly the sleep will readjust. Put down c.6.30/6.45pm

What happens if you put him in his bedroom with the door shut at bedtime and leave him to it (after making the room toddler safe)

Because I know for a fact if I let him sleep at 5pm he'd be up a couple of hours later and then up till 2-3am. Hes never really slept more than 9 hours at night, 10 max

He will either cry or get up and play /look at his books

I was thinking whether to do this. I do find it hard to stay in with him though and we do stay and plays a few times a week. I work 2 days a week so he's with family those days. He doesn't nap much on those days.
Yesterday he didn't nap and went to bed at 7 but then was up at 8pm screaming and really unsettled and took him a while to go back to sleep. Just feel like I can't get the balance right with his sleep.

@sleepymama3 we co sleep so don't think he's cold. He does go in his own bed in the evening (well he was) and then comes in with us. X

Appreciate hard to stay home but would prob be 1 weekend- and best to do in this miserable weather. It’s like potty training, yes it sucks to stay in but it’s a means to an end. Stock up on playdoh and stickers and don’t worry about too much cbeebies. My eldest napped until 3.5yrs and my youngest dropped her nap at 22 months- they are all different but I’d say clearly the nap is causing the night issues.