Cot advice please

[Keeptrying24]

DD1 is 17 months and currently sleeping in my bed as she is scared of her cot this is not a new thing but im not sure how to handle it.
We are currently going through a lot with her, she has recently been diagnosed with poor muscle tone and hyper mobility. We are also waiting for numerous other tests such as genetics and neurology testing.
Thus far we have no answers for DD's delayed development and behaviours.
Just a bit of background its not just her cot she is anxious or scared off she becomes very anxious when it comes to new things, new toys i brought a new beaker for her a fee days ago and she gets upset when she sees it and won't even touch it never mind drink from it!
She first started sleeping in with me as if she woke during the night or in the morning she would never make any noise or let me know she was awake she would just lay there! (I also just love to snuggle with her!)
Recently i tried to introduce her to her cot again and she was so scared! I put her in it and got in with her, put her favourite tots in there to make it fun ext but she just sat there shaking and crying :-(
I don't know what to do, do i keep trying or do i just leave it for now?

Can you advance to a mattress on the floor right next to your bed? maybe move her over when she is asleep

And inch slowly towards a non-cot solution?

How about one of those drop side co sleeper cots? Or move it next to your bed then gradually get her to retreat?

My 3 yr old is still in his cot. I dread the day he can figure out how to get out of it

Thanks for the advice
Senvet I have tried the mattress on the floor and she rolls off it in the night (she is a real fidget when sleeping!)
2boysnamesR i will look into the co sleeper cots and see if that helps her.
Currently i have her cot next to my bed and have moved her when shes sleeping but she wakes up screaming as soon as i put her in it

You could see if you could just take off the side of your cot and push it right up next to your bed. If that works?

I'll try that this evening.
I think the problem is not so much her sleeping on her own because if i take her up and put her in my bed she will stay there even if im not in bed, its the anxiety surrounding the cot, she last slept in it when she around around 8 months, and then i moved her but left the cot in her room so she hasn't seen it for a while so i guess to her she doesn't recognise it which is causing the anxiety i think. Its been in our room for around 2 weeks now and she still doesn't seem to be getting used to seeing it in there if that makes sense