I have been in similar situations where I've had a few weeks and made a conscious decision to drink for a holiday party Christmas or some other specific events. The problem is there will always be another event which will be a reason to drink.
so if you go and drink then stop chances are you'll do exactly the same thing in 1 2 3 months when x y z happens.
I suppose you have to ask the question do you really want to stop drinking or just have periods of not drinking and then drink again for a while. Tell more you keep drinking the easier it is to do again and again.
you quit for a reason. Do those reasons still exist ?