Hey @bthnklc ,
you just need to use async replication and set it up between these two clusters (main and DR).
If you are on version 8, I would recommend to use Async Replication with Connection Failover introduced in 8.0.22: MySQL :: Automatic Asynchronous Replication Connection Failover
I don’t believe we have any publicly shared how-tos for this. It is a matter of MySQL configuration, which you can get from the link I shared above.