I can see how alcohol might help you fall asleep (but normally the sleep is not high quality sleep at all) or maybe how it might wake you up initially (but not for long) but I can't see it as part of a successful treatment for any disorder, and doubt a doctor would recommend this plan. I don't know what kind of job you have, but if you can only work while drinking that doesn't sound good either.
If you have trouble sleeping there are more natural ways to try to get there. If you're always tired, alcohol is a depressant and may be part of your sleep disorder in the first place, especially if you're mixing it with prescription drugs.
Would coffee or tea work instead of alcohol?
It's fine if you're not ready to quit yet, but if your main reason is that it's for medicinal purposes I think there's denial going on and it may come back to bite you. Try to spend some time here and see if you can relate to some of the stories and experiences-it's a great place.