Dry days is a really interesting idea. I wonder if it’s doable to do this in a working day when you need to work at a screen, might be too tempting to procrastinate at work. But maybe 1 of the weekend days could already bring benefits like you describe.
It is esp. important on a working day. I thought I'd need to be responsive to emails and messages, but nothing that could not wait at least until evening. Every so often, I'd have to spend a half hour going through all messages to make sure nothing got dropped, but the rest of the day was dry.