I used to be able to speak schweizerdeutsch, but unlearned speaking it sometime in my youth due to disuse. I can't remember switching to it in my head, but it m

I used to be able to speak schweizerdeutsch, but unlearned speaking it sometime in my youth due to disuse. I can't remember switching to it in my head, but it might just have been my age. I definitely do a fair amount of thinking in English (not when cooking and cleaning ;)).