2.5 year old suddenly not sleeping

[istheresomethingwrongwithme]

DS has always been a fantastic sleeper, 7-7 by night, long naps, self settled etc. He hasn't been having a daytime nap for several months now and has been fine. Recently he has resisted going down in his cot (screaming, crying, reaching to get out). I've managed to get him to nod off in our bed and then transfer him, but then he wakes up during the night and will only sleep in our bed.

Tonight I haven't been able to get him to go down at all, so he's still up now.

Plan is to move the double bed from the spare room into his, so I can sleep in there with him when he needs me, but I really don't want him to depend on me for sleep. We've tried taking the sides off his cot (turns into toddler bed) and he hated it.

Any other ideas??? Is this just a regression we've got to ride out? I have a 10 month old too so I'm knackered!

I would buy a single bed now .
My child at 2.5 hated the cot and bed. They are a bit small.
when I got a single and placed it beside mine, let him choose the duvet set; he loved it. Then moved him into his own room.
Also if you are putting him down in your bed , letting him nod off, then shifting him, that’s why he’s waking looking for your bed, because that’s where he fell asleep x

It's only been very recently that he's been nodding off in our bed because literally nothing else would work. I think he's too big to drop him into the cot now without waking him.

We've managed to get the mattress and bedding from the baby's room into his room and he's gone to sleep in there and I've crept out. Think I'll just try to get him sleeping in there on the mattress on the floor for now so we don't have to worry about him falling out. Will find some dinosaur bedding to make it 'his'.

He's speech delayed so it's making it harder to reason with him!