Best approach to authenticator apps (TOTP)

This is more a question around methodology than technical. I am curious what others are using for automating processes that require MFA through an authenticator app (Google, MS, etc.)? I know there are methods out there, such as accessing through a python script and pytop, I am more curious what folks have had success (or failure) implementing. I have a number of customer portals that will be coming up in August with a change from text-based MFA (working today) to an authenticator app. Just beginning to plan the approach, as I’ll want it the same across all portals if possible, and of course as stable as possible.