People who have been on sleeping pills and now off them, how do you fall asleep?

Ok so I posted something right now but somebody had some problem with it so I deleted it. I hope this is fine. This is a genuine problem of mine. I have been on sleeping pills for a loooong time. And I have tried like all kinds of them. Currently I was on 100 mg Quetipine and it stopped working too. So after many sleepless nights or just a couple of hours of sleep even after 300 mg I finally went to my psych so he added 1.5 eti(benzo) to it. But it still didn't give me sleep so I added 100 more of Q. So 200 + 1.5 that did help me sleep fine though. Also tonight same. But the the thing is this will also stop working after a month or two. What then? Another medication or combination of two sleeping meds now (which is usually never recommended ). How do I ever come off them. Because I have gone through 4-5 days without sleep once when I had no access to them cos of some reason.

So those who once were using them in whatever severity, did you ever come off of them? If so how?

Tonight also I will have to do the same. I have to see my psych in 5 days. Idk what to tell him that I am taking more than prescribed as prescribed isn't working. Or try a new one now as we both have a new drug in mind. It is more stronger. And probably the only one I have not tried among all others. I can function fine on 3 hours of sleep but continuous 3 hours. But I just can't get it. I wake up like every 15 minutes and barely get 1-2 hrs of sleep on meds. Without meds, nothing. Zilch.

Anyone experienced. Please share your experience.