The last day I drank I only had three pints, that was on a Friday night and there was still plenty of time to buy beer at the stores and even more to hit a bar that night, but I stayed strong reading this forum and listening to recordings of AA speakers. That first weekend I was tired, but my brain was wired and waiting for more of the drink, I could not force myself to get tired enough to sleep for more than an hour or two each day. Thankfully for me, once I made it around to the second weekend I was sleeping more soundly and I wasn't worrying about how much time I had left to go on a beer run for my nightly fix. Remember to not be ashamed if you start eating everything in the house, it happens to most. I am starting to get over my incredible spike in appetite, but I do keep some sugar-free snacks nearby (mostly sunflower seeds).
Best Wishes
Edit: You might want to take some extra vitamins if you don't take them already.. B-Complex.