12 month old refuses to sleep by himself

[twilightstar]

My son just turned a year old a few days ago. He has been following a good routine since he was 2 weeks old. He used to sleep well by himself until he had teething issues and then house move three months ago and now he does not want to sleep by himself. I put him in his cot at about 7:30pm and he sleeps well for a couple of hours or so and then keeps waking up and then refuses to sleep again in the cot. Now he wakes up ever so often and I am at my wit end. I am so tired and stressed out. If I let him cry, he throws up and works himself up. I feel helpless. DH helps too but my son is more closer to him dad now and that makes it worse.
Any suggestions are welcome. I just want all of us to sleep well at night :(

Not had experience of this so none of the following advice is tried and tested (so feel free to ignore it!)

When he wakes does he sleep in your bed, eventually?

Is there room in his bedroom for a sleeping bag or something on the floor?

Does his cot fit in your room?

Would he sleep in his cot if you were there? Maybe you could put a temporary bed in there so he gets used to sleeping in his cot but has someone nearby, then you could gradually remove it (move it to the door etc) until he feels comfortable enough to sleep in it by himself and you get back to your own bed?

Is his room cold? Is he kicking off the covers? If so, you could try him in a sleeping bag?

I wouldn't let him cry (that's just me though, I'm a softee and couldn't bear to hear my son cry).

Sorry you're going through this just now - sounds tough.

I agree with eletheomel. I'd buy a single mattress (he'll need one eventually anyway so won't be wasted) and put it on the floor in his room and sleep there until he's more settled. Then move it slowly out of the room (half way across doorway, then just outside).

He sounds overtired (classic waking up after a couple of hours).

I'd aim for an earlier bedtime - at least 45 mins earlier and try staying with him for the first wake ups. There is a sleep regression at 13 months which messes with sleep.