Following because I am having the same issue.
I've tried summarizing instead of highlighting. Highlighting one sentence of each paragraph. Trying to read from authors point of view and nothing is helping me either.
... the longest time was the authors tone, not sure why but ... back and pick out the authors tone from the passages, and ... when LSAC slipped in the authors tone there I would go ... soon as I find the authors tone, I will mark it ...
... life of me remember the authors tone nor could I spot ... the authors tone. So I would in ... all the different ways the authors tone can be interjected and ... paint different images of the authors feeling of Adams theory.