The RSS feed helps people subscribing using a podcast app (like Apple Podcasts, Google Podcasts, Spotify, Pocket Casts etc) to receive your episodes.
Each time you upload a new episode, the RSS feed updates the app.
Then the listener downloads a local copy of your episode to listen to.
So you don’t need to do anything else.
NOTE: I always subscribe to my own podcasts so I can check the feed is working. I had a client recently whose feed stopped working and I logged into Apple Podcasts Connect [https://podcastsconnect.apple.com/] and you have the option to refresh the feed manually.
This “force refresh” re-started the downloads for my client.