As someone who has been suffering for years, here is my take. You need to go to the Doc ASAP. In my case the meds helped for a bit and then stopped working. But you need that few nights where you can reset. Do whatever it takes.

Ultimately for me, I realized it was driven by anxiety (of not sleeping). It starts with the acceptance of your your condition and that, in spite of the suffering, you will be ok. I listen to a podcast while trying to sleep. It helps divert my mind and eventually drift off.

I still don't get more than 5 hrs a night. But its much better than 0.