I can do it, and have done it ... several times! 
Once I did dry January and kept going till September - 9 bloody months!
Last year I packed up from September until Christmas. This year at the start of lockdown I stopped drinking for 55 days and if it hadn't been for my birthday and someone rolling up with a bottle of red, I think I probably would have carried on.
But I always go back to it for some inexplicable reason (and it's usually one of those 'aw fuck it' moments), and before I know it I'm back to drinking on a regular basis and sticking three or four bottles a week in the shopping trolley.
I'm like some others here. I can't have such a thing as a glass of wine. I can occasionally - very occasionally - stop after one, but 99 times out of 100 I drink the whole bottle and start on another. I've never quite got to drinking two bottles in one go, but I'm getting up that way.
There's nothing like opening a bottle, getting a lovely glass, the sound of that red liquid glugging into it and that first sip and the lovely warm feeling as it goes down and hits your stomach. It's usually when I'm cooking something nice I start drinking, then drink most of the bottle with my meal and carry on afterwards. Then as I said before, it's frantic remedial action before bed, guzzling loads of water, lots of teeth brushing and mouthwash swilling and perfume spraying and everything to eradicate the evidence of my binge and try and lessen tomorrow's hangover.
I'm sick of it, and I can go without it and be quite happy, so I'm just got to keep trying until eventually those 55 days or 3 months, or 9 month breaks turn into forever.