Installed both Catalina and Monterey on a small 120GB120 GB NVMe disk, and decided to stay with Monterey assuming that I could use the space left after deleting Catalina, but could not find a way to do it, the point was that the space needsneeded to be available after the partition, not before.
This post sendsent me in the right direction, but this oneHow To Clone Your Mac Using ASR from Apple Support Community https://discussions.apple.com/docs/DOC-250005828?login=true included the right options for asrASR to do the cloning.