I was never able to taper--once I start drinking there is no 'off' switch. With all the meticulous figuring out and obsession with what to drink, how much to drink, when to drink--it was mentally easier for me to just quit.
That doesn't mean to stop without a plan, for that can be life-threatening. My drinking was exclusively beer, 8-10 daily with binges of up to 18 for four years--when I quit without supervision I had full-blown alcoholic hallucinosis and then seizures when I finally went into detox. Talking to your doctor would be the best idea. After you're sober I think a plan to remain so is essential.
Wishing you the best, jessiessong.