I'd suggest rigging up some kind of physical device that will repeatedly click the mouse button every few minutes.
Or you could perhaps hire someone else to play the game for you. They would of course have to be physically present within your room, using your hardware, because sharing account information is against the ToS. This may be problematic during the current pandemic, but maybe having to press one button every few minutes or so is a hardship worth avoiding even if it comes with a higher mortality risk.