For what it’s worth, I’ve never met a successful academic or PhD who takes such a laborious approach to reading and taking notes for research papers. There’s not enough time in the world to spend four hours on one article, unless perhaps you’re a student ... and even then. I had one professor whose advice (specifically for occasions when someone was visiting to present a paper) was to read until you had a question to…
My experience with academics has been different.
The joke was that if you had ten papers to read, you'd spend ten minutes on all but one - and that one would take ten hours.