Would you be able to share it? I've been reading as much book as you for a few years and it's a pain remembering what I read, what I did not like in a specific book (to avoid buying same author if it was the writing), etc. And I happen to read a book I've already read sometimes and remember only in the middle of it "oh that reminds me something".
Right now I've moved so I made a list of all my books in a small spreadsheet but it's not enough!