Very tiny and unimportant idea, but in TLJ, instead of Luke calling the Jedi books the “ancient Jedi texts”, have him call them the “lost Jedi texts”. Take ‘lost’ from his TROS line, “And the war will be lost.”

There’s a few reasons behind this extremely minor change. The biggest reason being that it implies these texts were lost knowledge even to the Jedi of the prequel era, which would help explain why powers like force healing, force projection, or information like the existence of Exegol were unknown to them. (Tbh these things don’t really need to be explained, but this could be pointed to for those who needed that kind of question answered.)

It also kind of implies that the Empire destroyed all known information regarding the Jedi Order, and the only information Luke could find was knowledge that was even unknown to the Jedi.