You sound more like a daily drinker than a binge drinker, but a daily drinker that manages to fight off cravings for 4 days until you cave. As for staying sober for 4 days, that is not helpful or even a step in the right direction. Four days doesn't even come close to breaking the addiction cycle. But I think what you are or what I'm guessing you are is irrelevant. You have described the problem, and very clearly, I might add. What you must do next is describe the solution.
Describing the solution requires some thought about planning, including, but not limited to, what are you going to do to manage day 5 and week 5? Maybe you have done that. There's just no indication that you have in your opening post. But planning is essential in the solution.