Screen record a video of the process? Then you’ll have a video guide, plus you can take screenshots of the video for a written guide.

So what are you doing one-handed if not using hotkeys? I feel like any amount of one-handed typing would be impractical whether the keyboard is split or not.

What are you doing with your keyboard one-handed? I can’t think of any real use for one hand on a keyboard aside from gaming and shortcuts like copy+paste. And this keyboard runs QMK so it’s very easy to just remap any shortcuts that the split might make difficult.