He Agreed to Counseling

StrawberryAlarmClock

I don't want to get my hopes up that DH is suddenly going to clean up his act but I do want to try everything before throwing in the towel. I wouldn't even say I'm cautiously optimistic. It's more like I'm preparing for the worst and waiting to see if the best is even an option. Let's say, hypothetically, that some amazing miracle happens and DH actually attempts to get clean. How long would he have to be 100% sober before you'd consider continuing the marriage?