As mentioned above, some people need medical help detoxing. But if you're not in that category, I think cold turkey is the way to go. Cutting back implies we have some sort of control over our drinking and if that was the case we wouldn't need to quit.
It does seem really daunting at first, so just break it into little chunks. Take it easy on yourself.
It might help to make a list of other things you can do with your time. Keep reading and keep posting. We've all been there and there is tons of great advice and support here.