In these cases I explicitly tell the llm to make as few changes as possible and I also run a diff. And then I reiterate with a new prompt if too many things changed.
You can always run a diff. But how good are people at reading diffs? Not very. It's the kind of thing you would probably want a computer to do. But now we've got the computer generating the diffs (which it's bad at) and humans verifying them (which they're also bad at).
