I sort my subscriptions by the amount of new posts in a descending order. I then go through the biggest offenders individually and simply unsubscribe from those

I sort my subscriptions by the amount of new posts in a descending order. I then go through the biggest offenders individually and simply unsubscribe from those that abuse my RSS feed. I read RSS once a week and sometimes once a month (I am in academia, and "Deep Work" from Cal Newport had quite an impact on me). For example, Monzo bank's blog had 31 new entries when I checked it today and OKFN labs had just 4. I opened Monzo's feed and its signal-to-noise ratio was too low and I unsubscribed from it: c'est la vie. I think you can do this only when you take a look back at a week/month worth of material as opposed to running the hamster wheel of the twitter feed.