The high work in instructing is the easy part for the most part the "3 awe shucks high" part.

IMO make sure the student has got that part down pat before going lower. Trying to move on to the approach and landing phases too fast is a mistake. Since each student is different judgement prevails with this. In the past I had a couple students do some really surprising things about the time I was ready to pull the plug on the trainer cord for solo. There is nothing like having to fly an airplane out of an unexpected rolling of a bird inverted at 10 feet when the student has a sudden mental disconnect. Just when I the instructor started to somewhat relax at the later stages of training; the unexpected can and does happen. Just some thoughts.