I agree with markv, benzodiazepines are the pits, especially if you have a history of alcohol abuse. Have you tried Baclofen?
That's a muscle relaxant, but since it works on the GABA receptors (just like alcohol does) it takes away a lot of the craving and because it is (distantly) related to benzos, it also helps with anxiety.
I would advice against anxiety meds. They're very addictive and even harder to detox from than alcohol (if you're taking high doses of benzos). That is just my personal experience. I would stick with regular exercise.
I used to drink about the same amount of alcohol as you. I did it for over 3 years. I started working out 4-5 days a week about 3 months ago and my cravings are almost nonexistent. When I feel really anxious I go to the gym and do some weight lifting. You feel great for the rest of the day.
I'm not an expert and there's people on this forum that knows a lot more than I do. I'm just telling you what worked for me to stay sober for the last several weeks.
Good job on lessening how much you drink. Anxiety meds do me wonders. That's the best thing I can recommend. Or exercise, it releases endorphins which should help.