Use the search engine on the forum to find many posts about alcohol. This topic comes up alot.
Alcohol WILL impair the immune system, which is responsible for the body getting rid of candida overgrowth naturally.
So short answer: yes, you have to stop drinking alcohol.
Long answer: When your immune system begins handling the overgrowth, as evidenced by symptom-reduction, you can have a drink or two. Eventually drinking socially as usual.
Keep in mind it only takes a week for mild symptoms to become “omg, wth is happening to me?!” symptoms.
That was my experience.