I switch between Java, go, Ruby, python, and js. And yes I'm a mess. The worst is which versions of "strip" vs "trim" each language uses to remove white space from the sides of strings.

I dread the next time I have to interview because I'm going to look silly, accidentally adding or removing semicolons and parens around if statements and etc.

Honestly aside from those, I don't notice it too much and there's kind of a muscle memory for it eventually where the switching becomes mostly unconscious.