Salutations!

I've been running Manjaro on my T495 without a hitch for a long time, now. With all the chatter about Manjaro possibly not being maintained, I wanted to explore jumping to a different distro like CachyOS. The problem is, when I installed Manjaro on a BTRFS filesystem, I didn't make a separate /home partition. Is there a way to migrate to CachyOS without deleting /home?

I realize BTRFS uses subvolumes instead of "real" partitions, but I'm not sure how to proceed. In my initial searches, there is a process to rename the subvolumes to something else, install CachyOS, then use rsync to restore my files, but I don't know WHERE to do this. In the LiveUSB environment? During the installer? (See post Here)

Or am I better off just using rsync to backup the whole /home folder to an external drive, install CachyOS fresh, then rsync my files over when the installer is completed but before I boot for the first time?

Apologies if this is some basic stuff, I just don't want to lose any data, especially my Docker containers and pictures.