How can I cause a failover on an Aurora Serverless v1 DB Cluster with no instances?

End goal: I'm trying to demonstrate the ability of an application to continue operations after a database failover without manual intervention.

Specs:

• Db family: aurora-mysql5.7
• Db engine ver: 2.11.1

Some Attempts:

• aws rds failover-db-cluster. This results in "You cannot failover DB Cluster with Aurora Serverless"
• aws rds stop-db-cluster. States it's "not supported for these configurations"
• modifying the cluster capacity to 0. Only allows for values between 1 - 256

My understanding is I can't use a cluster failover command as with Aurora Serverless the process is automatic. Are there any changes I could make which could guarantee a failover would occur under normal circumstances?