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Using a pomodoro approach instead as exposure therapy might help, start in a safe range, X minutes of computer, YY minutes away from computer, slowly add to X when you can (and remember, if you need to reduce X, that's okay too, not a bad thing at all)
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If you feel somewhat overwhelmed too, switching back to a text console might be an option, la installing Debian on a separate drive or the such without any graphics.
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I'd note that a body being in ketosis is not its ideal state. If it works for you, then ignore this. But it can be something to look into moving away from as things steady out / to help things steady out.
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I don't know anything though, so don't take these suggestions too seriously. Best of luck.