I used to start the same place the author did with total blocks but kept overriding for real purposes then getting sidetracked. Identified the real problem as feeds which choose what to watch for me instead of me choosing. So I use custom apps and extensions to remove all the feeds but keep the search and messaging functionality (Feurstagram). Sometimes I catch myself opening the page out of habit but then realising I have literally nothing I actively want to watch/search for ...