Great progress video, with interesting observations about some missteps: https://www.youtube.com/watch?v=tc3s16Um04A
Wonderful! A reduction from -3 to -2, opto confirmed, in the space of 3 months. Also a lesson to be learned about using differentials, even with low myopia - a lesson I admit I am reluctant to apply. My excuse is that I do not spend that much time at the computer. But then I only use my norms for driving and checking the 6m Snellen, so I am a heretic on all fronts.