OCLP in a dual-boot system

Hello,

I own a 2013 MacBook Air. It still works, but Big Sur is getting obsolete in terms of software.

Since I got it in 2013, I always updated it on this basis:

Half the SSD contains system A

Half the SSD contains system B

I always kept the current version in a partition, and upgraded the other. Some software (with licenses) does not get updated or newly licensed for me, some of it specific to my job. It was my way to ensure a nice transition just in case I needed to review data from years ago.

So… I’ve been having OS 10.14 as system A and Big Sur as system B. It is an APFS volume divided in two parts.

I want to format part A, and use OCLP to install Sonoma in there. Big Sur will stay in part B as long as I ensure software works.

I’ve seen dual boot configurations work fine, but they usually start from scratch instead than an already dual boot system. Is this a reasonable thing to do? Is there anything I need to take care of?

Thank you in advance