The mouth is not only moved by one Bone. You have no control. I also think that the volume is not directly correlated to how far the mouth is opened, let alone to the mouth shape.
Might work on a background character or on a robot, You can of course give it a try to see how it looks.
But it would also defeat the purpose of this course to learn lip sync, I think.
Wayne will come up with a better answer, I’m sure.
