To release resources, you can delete DB instances or read replicas as required on the Instances page.
in the upper left corner and select a region and a project.
If it is associated with a DDM instance, you will be redirected to the DDM console. Disassociate your instance from the DDM instance. Then go back to the RDS console, refresh the instance list, and delete the instance again.
in the upper left corner and select a region and a project.
. All the read replicas created for the DB instance are displayed.