RDS Monitoring using PMM2, Missing Host Metrics for Postgres

I am using PMM2 for monitoring all my RDS instances.
I added Postgres as a remote database, But by adding a database as remote in PMM2 we miss host-level metrics like CPU, Memory etc. What is the recommended way of adding Postgres (RDS) or a way to inject missing metrics to get the complete Node Summary?

We don’t yet have a way for Postgres in AWS but it is on our roadmap.  Right now the only way to get additional metrics surfaced by AWS is for MySQL.  Remote PostgreSQL is the only thing we support right now.