According to Osho, yes: realization can occur even while drinking, because the whole world is an intoxication. Do not postpone awakening until you first renounce; begin with awareness now, even if you stumble. Nurture the small knowing that you are unconscious and keep rising after each fall. When awareness flowers, the taste for wine, ego, and cravings naturally drops.
You can wake up even if you still drink—start being aware, and real awakening makes the urge to drink and chase desires fade on its own.