If you usually have normal levels of liver enzymes,it can take up to 2 weeks to get back to those levels.
I hope your know that drinking alcohol when you have hep C is about one of the worst things you can possibly do to your liver.
I found the following information from this website http://www.homehealthtesting.com/how-long-does-alcohol-stay-in-your-system.html
"Pretty much everyone, regardless of age, size, or race, metabolizes alcohol at the same pace. That pace is .015 of blood alcohol concentration (BAC) per hour. So that means for every hour you are not drinking, .015 of the alcohol in your body is being metabolized and disappearing from your body (thanks to David J. Hanson, Ph.D. for this information). So, if your BAC was 0.08 (legally impaired), it would take about 5.33 hours for the alcohol to be eliminated from your body."
Hope that helps.