I'm struggling with this a bit as well - I swung between restrictive eating and bulimia when I was younger, and it seems like all the old fears and stresses about food have poked their heads out now that I've removed alcohol from the equation. Turns out the old enemy was being subdued somewhat under a blanket of booze!
I actually bought a book about food addiction yesterday, and it is fascinating - it's called The Hunger Fix. It gives some guidelines on how to stop relying on food to fix your emotional issues, which I am going to start working through this week.
As others have said, don't be too hard on yourself, and don't try to fix all of the things all at once. That's what I keep telling myself. Giving up alcohol is huge, and more than enough for now - especially given you're so early into it.