Annoyingly, neither your listed method nor the slightly different one in the comments work for me. I’ve tried adjusting the page using the Android app and the PC program. No joy.
Lauren’s post looked like a life-saver… but it seems that Amazon UK (perhaps) haven’t initiated that option as yet. All I get when I press the button is “Download to my…” and “Delete”. No other options.
The day Amazon get their fingers out of their backsides and allow multiple “reader” accounts on one Kindle account the better.
Oh, and categories on the Android and iOS apps!