If your keyboard supports vial, you can setup tap dance through ui

https://github.com/jaroslaw-weber/code-pillow

This is mine (I have few changes tho) if you want some inspiration :) it's 34 based on Canary layout.

I really love small format but I struggle with chords misfiring. But it's a good mix of one shot (shift and symbol layer) with hold (navigation) layers. I think I couldn't go lower without sacrificing typing speed.

Bit too low for me but interesting. I think ditching pinky column completely is too much, I'd rather go 3*4+2 per hand minimum.

What's the layout?

She's 5....