https://docs.github.com/en/free-pro-team@latest/github/creating-cloning-and-archiving-repositories/about-code-owners
Maintainers could volunteer to be assigned to all new PRs for particular folders in the repo this would mean that a maintainer would have 5 or 10 pull requests to review in topic areas that they are interested in instead of wading thru the current 224 open PRs.