What I do is go through all the new titles from beginning to end and just open anything I want to read in a tab, FreshRSS supports this workflow well. Then it sits in that tab for however long and I read them in the order I want to, sometimes they grouped and stored while I do something else.

I also have sites I filter their RSS as well, they produce really large amounts of articles and I am only interested in certain topics. Took me a while to get around to this, for the most part I did not want a mainstream news site firehosing into my RSS but I have filtered it based on keywords.

That is about it. Takes a bit of effort to slowly build it up but I hate it when sites don't have RSS, I rarely read sites that don't now.