Leave BB in private room

I recently started Death Stranding, I am at chapter two. I seem to have a faint memory of reading that there is a way to head out without BB? (it was about getting around the map and BTs without the help of BB I think, strangely now I can't seem to find anything about it, only a video where BB is not present on youtube) As far as I have progressed in the game, it seems to not be an option not to take BB with me. I know it is somewhat tied to the story, but will there be an option later in the game to leave BB in the private room or does Sam carry it with him all the time?