I used to blame my relapses on wanting to sleep. I was a blackout drinker. Still only slept 3-5 hours and it was fitful sleep. I finally figured out it was better to have only one problem - insomnia, rather than 2, alcoholism and insomnia. I am doing much better today. I am now sober 2 years and 2 months sober on the 14th of this month. I am done drinking by the Grace of God.
I hope your sleep settles out soon for you. Most recovering alcoholics say they don't sleep much more than 6 hours a night. As one ages your sleep cycle shortens also.