Hang in there, Mike. It gets better. I can't recall how long it took for my sleep to normalize. But it will. Remember to see it for what it is...recovery.
You didn't become an addict overnight. And it is going to take a little while for your brain to re-wire itself. But the good news is that you're in the right place. Scroll through roll call...not just your own group, but all of them. Look how many people are, or have been, right where you are right now. That is a ton of bad ass quitters!
There are no short cuts and nobody can do this for you. We can help, but you have to do the heavy lifting here, hoss. The good news is that you can do it. You can live free again...you just gotta put your mind, body and spirit into it...and get some mints or something.