Well my taper went three days - starting where you are, 8-12 drinks a day.
Day one: two drinks
Day two: one drink
Day three: just a tiny half-shot
Done. Well. Done drinking. It was still uncomfortable for three or four days, and I really didn't feel well for a couple weeks. Then it took almost a year until I felt back to normal.
I did it without medical advice, and I was fine - BUT lots of people cannot do that and really shouldn't try. I just didn't know any better. Withdrawal can be dangerous - even deadly - and tapering doesn't work at all for many people, they just can't stop once they start. Medical help is always the suggestion.