Ask: HN How often do you add or delete a rss resource for you rss reader app?

I use NetNewsWire on iPhone and Mac, after adding too much rss resources, there are too much new articles for me. Sometimes, I want to delete an author who I add in the past and already didn’t remember . Too much efforts are necessary to maintain the suitable quantity for my rss reader.

Are there some strategies or tips about how do you update your rss resources on rss reader app?