If you made it weeks without drinking before, you KNOW you can get there again. And weeks turn into months, and years. It all starts with those very difficult first few days. I did the exact same thing when I was trying to get sober, go a few weeks, then lapse. It feels great with that alcohol going through your system, but, like you said, it lets you down hard. Those early morning wake ups were just horrible for me.
This is not a failure, just a learning experience. One small incident. As you know, that that damn AV trying to get you to drink never lets up, it is a tough battle, but so worth it, as you know. Best of Luck, Be Strong, Post here often.