Not with touch typing directly, but years ago with ten-key and more recently a similar set of mental remappings to text editing using Emacs key combinations in lieu of CUI and the mouse.

My advice: don't force yourself. Just resolve to more frequently make a conscious effort to spend a bit of time touch typing. Maybe it's five minutes on a task requiring little flow. Maybe it's replying to email or typing into little boxes on the internet. Maybe it's working on a side project.

That way, productive work won't take a hit, there's calander scale time to develop alternative habits, and it's not an exercise in self-flagellation.

Finally, it's ok to use different techniques at different times, there's no rule requiring a single mode of keyboard interactions.

Good luck.