That first step is a big one, and I’m very excited for you.
Only advice is to be honest, with yourself and others. Now is a good time to write down how you’re feeling. I know I felt hopeless and exhausted to put it mildly. But also where you hope you might go from here, sober.
The doctor is a really good start for help. Sponsorship is something you find in a twelve step program like AA. I do that too and found it helped a lot. You could start that anytime by checking out a meeting if you want.
Surely the doctor will also point you towards resources for recovery. And this forum as well if you wanna stick around and share in the journey!
This is also a great thread, if you want a place to check in daily about how you’re feeling, and hear from others on their path as well!