Been holding on for several days not eating much , still drinking alcohol, sleeping a lot and having memory loss. how long to live?

How long do you want: It is hard to tell if you are trying to die. If not, stop doing what you are doing - now! this could, indeed kill you but it might be a very unpleasant and unpredictable way to go. If you want to survive - seek serious medical help asap. Go to an er and expect detox after you are stabilized. You must have suffered some hard things and that is so sad. It can get better, if only some. Choose!