Preparing for a backup to another machine

Hello,
I'm currentrly running Parallel Desktop 17 on a Intel Macbook pro (Big Sur)
I just purchased and I'm going to install the upgrade to V. 19 on the same machine.
I also own a Mac Mini with M2 processor (Sonoma) tha I'd like to use as a backup in case of failure of my Intel MacBook.
I know that it's possible to transfer the VM by uninstalling and reinstalling Parallels on the new machine, but I wonder:

1. in case my current Macbook in blown and completely unusable, how do I deactivate my current license? Is it an option available via website?
2. To ease and speed up the switch in case of failure, could I install the new Parallels Desktop 19 also on the spare Mac Mini M2, but without activating the license, and continue to use the good old MacbookPro? In this way switching would only be a matter of copying the VM file, and reactivate the license...

If you have any best-practice suggestion, I'll be happy to hear from you.
thank you