I was only on the z-drug for one month, and here I am, literally a year and 2 months afterward, and I'd say I recovered 95%. I can sleep and have no symptoms, but I have to watch my sleep hygiene like a hawk. I had to completely give up caffeine, and trying to diet just became 10x harder, because if I don't eat, I don't sleep (before I could go literally 3 days in a row with no food, and still able to sleep).
So maybe I will try some alcohol..........................a year from now? Maybe 2 years? Maybe never? I haven't decided yet.