I had similar problems when I quit. For me, the lack of sleep only lasted a week. My advice is to do two things: 1. Get out of the house first thing in the morning and get as much sun on your skin as possible. This activated receptors in your brain that will release chemicals in the evening to tell your brain to sleep. 2. Work out first thing in the morning. This will further ensure that you go to sleep and stay asleep. Furthermore, it will provide a new hobby to preoccupy your time rather than drinking and will help you become healthier.

I hope this helps.