How to safely stop topical finasteride?

I’ve (29, f) been using a combination of minoxidil and finasteride topically for many years (lost count). I got the medicine from my home country and I can’t seem to find it anywhere here in America. I’ll be out of it in about 2 months. What do I do if I end up running out of my current medicine? Is there a safe way to use minoxidil alone without the finasteride? I’d like to avoid oral finasteride for its side effects.

I have a dermatologist appointment in a month but I’d still like to know your thoughts and experiences

You can buy topical fin, see the product finder. You can also make your own, it’s not very difficult.