[geoah]

I've found that the more and the faster I read in general, the better I get at processing said information faster.

You can try improving your reading speed in fiction books as it's easier and less mentally straining and see if that helps you with non-fiction processing too.

Immersion reading (reading and listening at the same thing at the same time) has been great for me to improve both the speed at which I'm reading but also my processing and language skills (non native English speaker). Kindle and audible support this out of the box, but you can also do it by listening audiobooks and just using a pdf reader.