Rebuilding at 57. Terrifying, and exhilarating at the same time.
REALLY good question. But if you're getting into a serious cycling program and workout routine (which was my thing) and making a plan for starting over....sounds like you're already doing it.
At a week sober, I think you need to make a sobriety plan and a method as to how you're going to remain sober for the rest of your life. Right now it's very short term. What groups methods, and if going to meetings, how many days a week and which ones, for example. Sobriety takes a lot of time and effort; at this stage, your JOB is sobriety and staying that way.
My social life revolved around drinking. What I do and who I socialize with hasn't changed that much. I just don't drink anymore. Once I got enough distance from alcohol and drugs and became a non-drinker/non-user, it was relatively easy for me. But it took at least 6 months, and my big party group was hugely supportive of my efforts.
Congrats on your week, it's HUGE!