I did something like this with my reader:

- Only subscribed to lots of niche news and small websites (most of my list has the category 'dev blog' attached to it, so that's all of you guys/girls with a blog).

- Only get posts when I click, basically no automatic hoarding in the background (except for my Newspaper functionality, which does a little bit of background request for important feeds that I manually selected).

- Just pick the last post from a randomly selected feed. This really gets me going from reading about Linux, to reading about the best way to bake a cake, to reading about interior design, to reading about bikepacking... all in one sit.

- Or only pick from randomly selected feeds with a certain category, when I'm in the mood for a specific kind of news. For example, I want to know new videos on selected Youtube channels, or i only want to see posts with a picture attached (I call it 'photo feeds').