Looking for a Method to Subscribe to All Communities on Multiple Lemmy Instances

I'm running a standalone Lemmy instance, but I'm not planning to develop or grow a community on said instance since it's mostly to practice my infra and DevOps skills. I would, however, like to subscribe to all communities on other instances, for example, on lemmy.world and several others. Is there an easy way, or can I only subscribe to each community individually?