This is the "Intermediate Wall." Most learners crash here because they try to read the grammar book without doing the work.
Beyond the Textbook: Mastering Minna No Nihongo 2 with the Renshuu PDF (Workbook) Minna No Nihongo 2 Renshuu Pdf
Open the PDF. Pick a lesson you failed last month. Redo it. Erase your old shame. Learn. This is the "Intermediate Wall
The is not a supplement. It is the workout. The textbook is just the personal trainer telling you what to do. The PDF is where you actually lift the weights. Redo it
The textbook shows you plain form. The Renshuu forces you to translate: "I go to Tokyo" (casual to friend) vs. "I will go to Tokyo" (polite to boss). You will fill in 30+ gaps until it hurts. That is good.
Print a page, fill it out, scan it back. Or use a PDF editor (like GoodNotes or Notability). The ability to redo a drill 10 times without seeing your old wrong answers is critical for fixing fossilized errors.
