Stopping my manga from yellowing?

Hey all, I’ve had my collection for a while even though I haven’t read any manga for quite some time but I’d still like to keep it in as best condition as i can. Where my bookshelf is the tops of the books do receive sunlight but I can’t really put it anywhere else in my room without the same thing happening. (Smaller room). I noticed today that my chainsaw man volumes (picture 1) were starting to yellow. Picture 2 shows volume 17 which was only recently added and is already pretty much matching in yellow. (I apologize for the dust, like I said I haven’t even really touched these in a while) Last picture is the bottom of a book versus the tops. Any help?