One proposal I would make for this is to commit to a day in the week where we dedicate 1 or 2 hours to reviewing PRs. I found that just setting a time in my calendar works better than reacting to notifications. We can make that commitment more or less informal in the List of Tutor Maintainers.
I had my time slot set on Monday but I realised that’s usually when @regis would merge outstanding PRs so I switched it to Friday.