Ok, just gave it a try and I am still running into an error.  Here is exactly 
what I did:

I logged on to my host where osd.10 is

Deleted my current VG and LV's on my NVME that will hold the WAL/DB, as I kind 
of liked what you used.  My VG is called "cephdb03" and my LVs are called 
"ceph-osd-dbX", where "X" is 1 through 4.

Ran the command to stop osd.10 service:

systemctl stop ceph-474264fe-b00e-11ee-b586-ac1f6b0ff21a@osd.10

connected to the general cephadm shell and ran:

ceph-volume lvm activate --all --no-systemd

Exited the general shel and entered the container for OSD 10:

cephadm shell name osd.10

Ran the ceph-volume command to create the new DB on cephdb03/ceph-osd-db1 :

ceph-volume lvm new-db --osd-id 10 --osd-fsid 
474264fe-b00e-11ee-b586-ac1f6b0ff21a --target cephdb03/ceph-osd-db1

Got the following error:

--> Unable to find any LV for source OSD: id:10 
fsid:474264fe-b00e-11ee-b586-ac1f6b0ff21a
Unexpected error, terminating

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