You could prompt 'is this dialogue bit realistic for an [man v. woman]+[profession]+background. Or you can dream up other targeted prompts that could improve your writing, plot, realism, geographic details, character-arc, historical details, etc.
If its a text book I think you are looking at it the wrong way. Having someone who has spent serious amount of time on a subject, is like meeting someone who has explored some part of jungle I haven't visited. The info that has accumulated in your head through that process is what is interesting.
I stopped reading books not because AI is mesmerizing but because I find the non-interactive nature of books irritating after too much AI use. ChatGPT allows me to stop and explore something, slow things down, bypass other things, connect it to other things etc etc
My suggestion would be make it interactive. Release it with an interactive interface rag or fine tuned to your ideas and content. Use your imagination on how that interactivity should be shaped.
Or - back when electric typewriters were cutting-edge tech, only a puny percentage of human-written books were accepted for publication. Writing well is difficult. Look at bio's of famous authors - roughly zero mastered the skill after only 18 month and one book draft.