I followed their instructions pretty religiously before and after the procedure. So I believe stopped vaping like 1 or 2 weeks ahead of the procedure and 1 or 2 weeks after (I don't recall exactly). I also cut out most sugar beforehand and whatever else they said.
That was 5 months ago and I am back to a normal routine now and I think my progress is decent? (I just posted pics of my progress here).
I am only now going to start with a topical Monoxidil + Finasteride + Bimatoprost, as I worry about the existing hairs in my vertex / crown area getting worse (I probably should have been using these meds the whole time according to people here and many doctors, though my HT doctor did not recommend it 🤷♂️, I will start taking it now)