I'm finding that these days, there's a discrepancy between what I think I should be interested in, or what I used to be interested in, and what I am genuinely, or currently interested in. Unless it's what I'm genuinely interested in, it takes more energy than I'm willing to expend and is perhaps indistinguishable from ADD.

Maybe you are no longer that interested in the subject. I have found that if I have to do something I am not that interested in I am bad at it but when something I love then there is no stopping me. That did not happen to me when I was a kid but then older I get......

When writing, read it from back to front. front to back from it read, writing When
I won't sound natural, but helpful... and red it out loud.

Stress and fatigue. I'm just getting over man flu, and I've really little recall of the texts I read and essays I wrote.
Now I have to investigate what I've done and undo it...unless it's good! Which so far it hasn't been, but not too much. Just a couple of mentions of case studies, then that's up for marking 24 hours early.

Yes, I find myself leaving out words that I did not do previously. I have a PhD, but since becoming actively involved in text-based communications, I find myself leaving out key words as I type. Especially verbs. It seems that I leave out verbs more than any other part of speech.

Ive written and read technical writing for many years. It can be difficult and challenging depending the degree of field specific jargon appears. In an attempt to sound knowledgable, some writers engage in unnecessary pedantry, which makes the flow unnatural and more difficult to read.

I feel ya pain, sister. Have been wading through highly technical documentation on an average of 5 hours sleep. Makes my brain itch.

I was a fast reader -- up to 70 pages per hour. But, over the years I developed macular degeneration, which produces both blind spots in the center of the field of vision and spacial distortion. Over the years, it decreased both the rate of my reading and my concentration. It got progressively worse, until I virtually gave up serious reading over a decade ago.

You need a break,a "Get away",repetition reading "Dry" information will put you to sleep.