hypohabit
noun
An action that is too familiar to register consciously but not yet repeated enough to be automatic.
Jules’s new apartment required the door be locked from the outside. The first couple of days after move-in, everything was fresh and new enough that his process when leaving couldn’t help but be wholly deliberate, and he always locked the door behind him. It wasn’t long before locking the door became a hypohabit, however, and he would catch himself unable to remember whether he’d locked the door just moments after heading out.