You could just add a couple of days extra at the end to make up the days. Or just stick to no drinking Monday- Friday. So do a "damp January ".! But try not to use it as an excuse to slip back into old habits if you want to avoid that. I have made it to day 10, trying not to sound too virtuous, but we haven't been out anywhere and have put all the post Christmas / NY wine in the garage so avoiding temptation, and my OH is doing it with me so it's a bit easier.