If you are in AWS, or have connectivity available, AWS Database Migration Service makes this relatively trivial.
DMS for Postgres is based on Postgres Logical Replication, which is built-in to Postgres, and the same thing Bucardo is using behind the scenes. But AWS DMS is very nearly point-and-click to do this sort of migration.
DMS for Postgres is based on Postgres Logical Replication, which is built-in to Postgres, and the same thing Bucardo is using behind the scenes. But AWS DMS is very nearly point-and-click to do this sort of migration.