PostgreSQL maintenance
I don't know what resources you're getting this from. Not just that PgAdmin page given some of what you're saying. The information you're relying on is either outdated or incomplete; all this is pretty much unnecessary.

Make sure that autovacuum is keeping up with the database workload and you're pretty much done. These days you should not generally need to run a manual vacuum or analyze, though it's handy after bulk loads or deletes. Manually reindexing is certainly not required as a routine operation.

See autovacuum in the docs.