After seeing this in the documentation:
This Is Not Managed Postgres
Before you use Fly Postgres, here are some things worth understanding about it:
Fly Postgres is a regular app you deploy on Fly.io, with an automated creation process and some platform integration to simplify management. It relies on building blocks available to all Fly apps, like
flyctl, volumes, private networking, health checks, logs, metrics, and more. The source code is available on GitHub to view and fork.This is not a managed database. If Postgres crashes because it ran out of memory or disk space, you’ll need to do a little work to get it back.
I realized what I actually need & want is a managed Postgres service. Using the 2nd instance of Postgres based on the snapshot, I migrated my Postgres database to another managed provider.