I used to worry about adding items to my “want to read” list faster than I could read them. I realized that this is preferable to the opposite - having nothing to read. As long as I’m alive and want to read, I’ll be reading something. Having read all the books I want to is not my objective; enjoying reading books is. So, no need to worry about not having enough time to read all I want to.
I now treat my list as a pre-filtered pool of books that span various topics. There is no prioritization associated with them. I find it best to read next whichever book seems most relevant to my interests at the time, which I can’t anticipate in advance.
The other day my girlfriend sent me an article about microscopic gears in the legs of an insect and so I decided to read a book off my list about intelligent design. My prior read was about cardiovascular disease because I read an article about cholesterol on the internet. The one prior to that was about gender disparities, simply because I felt like it fit my frame of mind at the time.
There is no need to make the matter complicated: read what you want to read, when you want to read it.