If you can get into a medical detox, that would definitely be the best/safest solution. Withdrawals are tricky. Some people quit fine who drank a huge quantity of hard liquor while others get really sick with a smaller habit like yours or even less.
You could also consult with your physician and get a prescription.
My advice would be that you follow through immediately after leaving detox with a meeting and/or other recovery oriented activity. Too many people just leave detox feeling good and decide to have just "that last one"