Sobriety is possible and better than you can imagine. I agree with others that tapering and lowing your intake should not be your goals right now, but rather racking up some sober time. If one day seems tough to handle, break it up into time frames: I won't have drinks at lunch today. I won't drink before dinner today. I won't drink at dinner today. etc.
You can do this. I was one of the ones who thought is was impossible, absolutely impossible to quit but turns out I did it and so can you.