[curt.clifton]

There is definitely a bug in the sort by Next Review setting. I'm not sure what it is sorting by, perhaps last review? Using Help --> Send Feedback to report the bug.

The group-by heading work the same for Next Review as all the other time based headings. You get Today, Yesterday/Tomorrow, Last/Next Week, Last/Next Month, and so on.

What's your trigger for reviewing a project? Why not wait until it shows up as Review Today instead for trying to review it in advance? Then the stuff with a three day review interval will get reviewed more frequently as you wish.