While I don't agree with "eat whatever you want and however much of it you want" in early Sobriety, I wouldn't try to change your entire diet/health habits all at once. Your focus should be not picking up, but overeating to avoid drinking can lead to a whole new set of problematic behavior. Change things little by little, an added serving of fruit and veggies here, substituting a healthier protien or carb there. You'll be surprised how much your body will begin to crave nutritious foods as you get further into Sobriety. Good luck
Bunnez