Symbolic link to /var/lib directory on another partition

On my Hetzner VPS are two partitions:

  1. /dev/sda1 19gB with 0% Available disk space
  2. /dev/sdb1 50 gB with 95% Available disk space

My /var/lib directory is almost 17gB in size. It ‘lives’ on the sda1 partition.
So it consumes most of the first partition available space.

I would like to move the complete /var/lib directory to /dev/sdb1 and then create a /var/lib directory again on /dev/sda1 with a symlink to /dev/sdb1.

Do you think this solution will work?