The recent movie Tenet is based around the idea of "inverting an object's entropy", to make it move backwards in time instead of forwards. A similar thing also happens in Greg Egan's Orthogonal trilogy, set in a fictional universe where
if you travel fast enough you end up going backwards in time.
I'm wondering if there are earlier appearances of this idea in fiction, and if so, where it was first used.
To be clear, I'm not asking about time travel stories in general (not even ones where events are experienced in reverse order) - I'm interested specifically in stories where a character travels backwards in time at a rate of one second per second, interacting with other characters and/or the world around them in real time as they do so.