I didn't want to change that, I know I cant use a bind mount or anything like that, I already went down that rabbit hole. All I want is to store the named volume somewhere other than inside my docker.img file.
EDIT:
So I was completely unaware that in Unraid 6.9 the ability to get rid of the Docker img file and use a directory instead was introduced. That completely solves this issue right there. I'll just screenshot what containers I'm currently running and migrate over to using a directory instead of a vDisk. So long as everything goes well, then problem solved.
relink's post in How can I change the location where Named volumes are stored? Trying to install Nextcloud AIO and I don't want everything stored in my docker img was marked as the answer