how im drilling 競技 at 0.5s speed runs

Currently in Phase 3.2 (1,450 hours). Was hitting a massive wall with 競技 during my 0.5s SRS speed runs. To stop the boredom, I built a 4-step micro-drill matrix pairing 競技 with similar kanji like 盟 and 免許. I run 60 reps at exactly 6 AM before my brain can complain. If my retention drops below 98.2%, I wipe the deck. It works, forget 'fun', just track the metrics.