> TLDR: learn Ctrl-Ins, Shift-Ins, and Shift-Del, maybe. Instead of Ctrl-C, Ctrl-V, and Ctrl-X

This is funny, because it was the opposite for me: retraining from Ctrl/Shift+Ins/Del to Ctrl+C/V/X helped reduce the pain in my right hand, which is already overloaded by the navigation keys.

But cording with two hands is a good point, I’m doing that as well.

I’m also using a curved ergonomic keyboard where the Ctrl keys are wider and less badly placed due to the curve.