Customizing ScrollBar mouse controls

Godot Version

4.3.stable

Question

Is there any way to limit the amount of scrolling caused by using the mouse wheel or clicking above/below the grabber?

Or, failing that, is it possible to check for the pressed state of the dragger? (I tried to capture changes to the scroll value and change them depending on a previously stored old value, but that messes with the grabbers dragging behavior.)