I was VERY sick when I quit. For the last six months of 2015, before I quit I had incredibly vivid nightmares despite taking a nightly rx for sleep and anxiety. I am sure the alcohol in my system ALL the time was why this was my norm.
As I got sober- 430 days ago- I had all kinds of withdrawal then significant PAWS. As for sleep, I had sweats and tremors during the night, and my nightmares slowly turned into equally vivid dreams (but not nightmares) then to "regular" sleep. This process took a few months. I had a few "drinking dreams" once the regular sleep started; relief to wake up to find those hadn't happened! Now, I occasionally have dreasm that are detailed and I remember them.
I still take the nightly sleep med. I would say hang in there and talk to your doctor. Sleep is still my TOP priority and concern as far as keeping my emotional sobriety stable.