Help me plan! 13 nights in Japan

Hello kind souls,

I'm going on my solo trip to Japan for 13 nights in early March! My flights and hotels are booked (though my hotels are fully refundable).

What I need help with are the finer details. I find trip planning really overwhelming and I procrastinate, so I'd appreciate any recommendations for how I should spend my time! I've been combing through other posts to get ideas.

I'm not interested in super packed itineraries. I like 1 or 2 activities per day to give myself purpose, though I love to explore neighbourhoods and take it all in.

Current itinerary:

  • 6 nights in Tokyo
  • 4 nights in Kyoto
  • 3 nights in Osaka
  • Train from Osaka to Tokyo the morning of my flight. Flight leaves in the evening.

Activity ideas:

  • I plan on doing some kind of walking or food tour in each city.
  • I'm not sure if I should stay 1 night in Hakone or Kinosaki Onsen (though I feel like Kinosaki would make my trip complicated and requires re-organization)
  • Window shopping in Tokyo (I love fashion!)
  • Potentially some fun self care activity I can only do in Japan
  • Tea tour in Kyoto

More about me/my interests:

  • I'm very physically active/in shape (can handle hikes, etc.)
  • I love fashion, art, and history

Open questions:

  • I have a small tattoo—not sure about onsens

Apologies if this was long-winded!

TL;DR: Looking for any recommendations for sights, activities, or readjustments based on my current itinerary.

by PresentationSenior72