It is severe? Has been fixed by themselve?
For me it comes in waves and goes.
I will have a cycle of crushing anxiety & Insomnia that fuel each other. It lasts about a week.
However, afterwards I seem to get back to my norm.
I can get about 6 hours uninterrupted sleep which is not ideal but tolerable. And after waking up, I can force myself to go back to sleep for about another hour.
It will improve after year but not 100 percent