Is reading speed a trainable skill?

During my second time in university after years out of education, it took me over 9 hours to read around 110-160 pages

Then in 2020, 2 years after I finished my degree, I read around 930 pages in one day and it took around 15 hours to do

Then in 2023, after being out of school for 5 years, I have difficulty, even covering 30 pages in an hour.

Is reading speed a trainable skill?
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