Hello Bingen,
Welcome, and glad that you are here! It takes some courage to acknowledge that alcohol has become a problem and to join a forum.
I think lowering your consumption is a start, especially if you want to quit completely at some point.
I also think if you have been drinking alcoholically for a while, cutting back will probably not work on the long run. Like many said, disturbed sleep patterns is a common symptom, and if you quit drinking it will take some time to go back to normal.
Nobody will force you to do anything, or expect you to do this in a certain way. But there are also some other options in real life you can think about and that can help you to quit completely whe you are ready:
Have you considered seeing your dr. and tell him about your problem? He can help you to find a way to stop completely and give you medication that help with withdrawal. Or can you maybe imagine meeting an alchol counseller?
As laFemme said, take some time...read some posts and keep an open mind.
Good luck to you, and a good and happy life is possible without alcohol
LS