A mild reaction can still help explain your reading.
Mark a small response without exaggerating it.
Write its visible cue.
Compare it only when another page makes the comparison useful.
Invented example: p.25: slight unease as the guest counts the cups.
TabMap for iPhone and iPad: manually mark the page, choose Keep, Felt, Clue or Discuss, and add an optional private note. One complete book map is free; no app account required.
Developer disclosure: I build TabMap. AI assisted this original exercise; all examples are invented. You can also use paper. No measured reading benefit is claimed.