You're doing most of what I do, I think the only thing I'd add is putting people / keywords beyond your own character's name into highlights. Like I have my PC's family, her friends' names, the group she belongs to, and so on. I highlight basically everything I can think of that should catch my eyes, and then I acknowledge that I'm skimming everything else and let my guilt for said skimming go because you can really only pay attention as a person to so much. I forgive myself for missing poses sent my way that don't include my character's name.
I also scroll back a page or so when I'm trying to read wall-o-text so it isn't moving on me, and then advance the screen at my pace instead of the pace of 30 people posing at once. It overwhelms me less that way, to read a page at a time instead of seeing it go and go and go. I get it all read at the same general pace either way, but this way one tiny little something something is no longer providing stimulation that adds to the overwhelmed.