I'm so sorry you are going through this. I've been there, too. I know what lack of sleep can do to a person. I don't know your story, but I hope you have a prescriber who can help you find something that works for you. It took me months and a very patient prescriber to work out something that helped me. For now I'm getting reasonable sleep on a combo of a couple of low doses of meds. I can hardly even believe the difference just getting 6-7 hours of sleep makes. My ptsd is not as bad and mood and energy are better. Not normal, but better.
I also have been using an app called iSleep Easy that has been very calming for me and has helped me to dread bedtime less. I fall asleep with it on every night. I set the voice part to end after an hour, but the music to continue quietly all night for when I awaken again. It's been very helpful. Not a cure, but helpful.
Wish I could do more to help. But know you are not alone!
(((hugs)))