I've never heard of this before, but I think it would be great to do some things that will help you fall asleep. Have you tried anything to calm your anxiety down? I find meditating while lying down really helps, I play a guided meditation video and close my eyes and I am almost instantly able to fall asleep. Another thing was buying a Kindle. I used to never read but I got a Kindle last year in September and so far this year alone I've read 7 books. I enjoy it because I can read at night with the lights off and it doesn't bother my eyes like a phone would or iPad. That has been a game changer! Maybe those things will help you, as well as ensuring to not use your phone for 30 mins before bed, etc. Hope that helps
