> What helped immensely to build the habit was to switch to a low-profile keyboard so there is nowhere to rest my wrists.
I feel like changing to a low-profile keyboard also reduces the angle at your wrist which ought to have a same impact as keeping your hands in the air
P.S. The keyboard I switched to was designed and built by myself [1]. It is a fantastic first project for someone new to electronics (e.g. me).
[1]: https://github.com/tadfisher/nyx-kb