I found that I end up being able to write more by setting up a markdown editor on my phone which syncs to github.
A similar thing happened to me with reading - back when I was commuting to work on public transport, I managed to read entire series of books from a .epub reader app.
It is funny to me how the objectively “best” setup isn’t always the one that ends up being used the most. I could write on my computer and type on a full keyboard, but my kids are using it non-stop, while my phone is private.
I then gladly accept the tradeoff - although a Bluetooth keyboard is a likely upgrade. My thumbs won’t last forever!