Changing SC 9 Development PHP to PHP 7

I am on SC 8 which runs on php 5.6.8.

Is there a safe way to upgrade my Scriptcase/components folder to php 7.x?

I do not wish to upgrade to latest SC and my news pest v9 is 9.2. Above request is due to my concern of migrating my production stuff from 8 to 9.2, developing on it and facing any instability that makes me have to revert back to 8. Is my fear unfounded?