I'd completely skip 13.2 as a ZFS user and just go from 13.1 to 13.3 (or soon 13.4). Though I think it got retroactively patched, 13 in general was getting progressively worse in my experience until 13.2 became nearly unusable with arc_prune calls and other performance bugs; on the flip side, I started reviewing my old performance metrics and management to find various issues and changes.
If you want intermediate steps, patch your current version, then upgrade it to the highest minor version number for your version, then push forward to the next version (normally straight to the highest minor version until documentation tells you not to). It is also wise to manually download a newer freebsd-update from a newer freebsd version before upgrading, which is normally the goal of many steps of "freebsd-update system to this version before further versions."
If you want intermediate steps, patch your current version, then upgrade it to the highest minor version number for your version, then push forward to the next version (normally straight to the highest minor version until documentation tells you not to). It is also wise to manually download a newer freebsd-update from a newer freebsd version before upgrading, which is normally the goal of many steps of "freebsd-update system to this version before further versions."