Can AI suggest an easier book without giving an older child babyish stories?

Imagine an older child who wants a space adventure but finds the text in the current book exhausting. ‘Suggest something easier’ should not automatically send them back to stories they stopped enjoying years ago. Reading Rockets' existing guide describes high/low books: high-interest subjects written at a lower reading level, including topics a child's peers are reading about. It also includes graphic novels among the formats worth considering. Those give a parent somewhere to look beyond a shorter list of younger children's books. If I used an AI assistant to help search, I would name the child's age, the subject they want and what makes the current book hard. Ask for a few candidates with simpler text, not younger interests. Then check the actual books through a library catalogue or publisher and look at a sample together. The assistant's ‘perfect for this age’ label is not enough to choose by. This is a way I would brief a book search, not a test of an AI recommender. I want the child to find a story they are keen to pick up, without an easier recommendation feeling like a demotion.