Easiest Backup option for Yunohost

Hi, I have an Odroid XU4 with Yunohost and Seafile installed. I’m using the server as a primary cloud storage so I can mount it as additional space for my laptop with a small HD. What is the easiest way to backup my seafile-data to a service like Backblaze B2 from my server so I have a remote backup?

After hours of research, I’m thinking I would use Seafile’s fuse extension to mount the actual filesystem on the server, then use rclone to automate weekly encrypted backups to B2. Is there a better option to this?