Bookshelf with random and odd objects placed within and on top will be doing something good or then again could be worse. Take a look at the heap I have lined along on the left side in my livingroom, now that’s bad LOL. I have no idea when I’m going to stick it in the bedroom, soon, soon.
Guess you could support a false ceiling that is even horizontally. You’ll have to remove a few shelves and anything less that I can’t see in the picture.
But I don’t see it as of paramount importance. The walls are odd shape same as mine that will be dealt with soon, soon. Does that room have window in the ceiling looks like it, looks like some natural light seeming though overhead.