Can confirm. I speak 3 languages (A (English), B (my mother tongue) and C). For most of my life I monologued in some combination of A and B. When I was a NEET for a couple years it was mostly in A because I spent most of my time on the internet. When I got a job my coworkers spoke in C so (as much as I hated it) my mind quickly started to occasionally default to C.
Another thing I noticed very often is when I consume any piece of media (could be a book or a TV show) my mind very quickly picks up the peculiarities of the narrative/spoken language and stays like that for a couple days.
Another thing I noticed very often is when I consume any piece of media (could be a book or a TV show) my mind very quickly picks up the peculiarities of the narrative/spoken language and stays like that for a couple days.