Hi Bingen and welcome!
Well, you've lowered your consumption which is good but how long will it last? There is always the exception that proves the rule but the reality is that most of us cannot turn back the clock and moderate.
I hear you on the sleep thing...I can't recall ever hearing of someone going through withdrawal without sleep issues....which is what is happening every night when you need 3 glasses of wine to sleep. I used to tell myself I needed the wine to sleep too. When I finally quit I had sleep problems for about a week....now I sleep very well indeed and don't have the nightmares that plagued me when I drank. Plus real sleep is 100 times better than passing out from a wine induced stupor.
Take some time...read what's on this forum and keep an open mind. I used to think life without wine would be a death sentence...I now realized that when I drank I was dead inside and with sobriety life is, well, full of life again