Have you tried changing the zoom factor by which it moves towards the character in mousewheel() ? There might also be a setMinDistance function in the _external functions client side, which might be keeping it from getting closer.
I sometimes scan thru those helpful functions in the external files to see other features the engine has, but does not always show right out front. They have them organized by categories. It might be somewhere the bounding box function.
I have added a few pics on discord to show how close we have the camera setting - min dist.