It’s even easier with Brew: have terminal window open, type brew install librewolf & if MacOS complains, xattr -d com.apple.quarantine /Applications/LibreWolf.app (for example to get a nice bland browser without corporate spyware). Every now and then, brew upgrade librewolf.

I had a friend trauma & sleep psychology profesor visiting; she said improvement of school performance with better scheduling was proven in few real life (cross-sectional?) studies.