Reading isn't a race, but improving your pace lets you absorb more knowledge in less time.
A 300-page book takes most readers 6 to 8 hours to finish, depending on reading speed and complexity. But with the right techniques
https://makeheadway.com/blog/how-long-does-it-take-to-read-300-page-book/
- reducing subvocalization, previewing text, expanding eye span, and using active reading - you can significantly increase reading speed without losing comprehension. Practice by consciously focusing on the center of a line and letting your peripheral vision catch the surrounding words.
And with consistent practice, you'll notice results within weeks.