Try you're best not to worry about PAWS. I mean, I know, being told not to worry about something doesn't do any good. But you can find your own ways to deal with your concern about PAWS, because the thing is, as you know, too much worry will do people in our situation absolutely no good.
Do your best not to worry about PAWS. If you experience it, you can deal with it as it comes. There isn't any other way to actually deal with it. And PAWS generally doesn't present until one has more than a couple weeks of abstinence, generally at least a month.
Why do you worry about PAWS, and what are your concerns about it?
Getting back to a normal sleep schedule was always tough for me in your situation. Exercise during the day (or exercise no later than two hours before you plan on going to sleep), eating well, staying away from caffeine after 12pm/noon, stay away from other stimulants generally, and there is always supplements and medications.
There are some non-gabaergic drugs that supposedly can help reset your circadian rhythm, although that's normally not the issue here. Melatonin for me was and is a must in your situation. There are some other supplements that are supposed to help like l-tyrosine and whatnot, but they've never done anything for me in terms of sleep.
The main thing with sleep is good sleep hygiene, staying away from stimulants, exercise and regularity - e.g. going to be and waking up at more or less the same times every day.
In any case, you'll get through this dooggie. Keep up your good work, and you'll do awesome. It may be real tough because you've been taking so much alprazolam and now you're transitioning to sleep without a potent gabaergic drug. But you can do it. There is absolutely NO question that you are more than capable of seeing this through and establishing healthy sleep patterns.