I have many students who fight this problem. Frank being one of them.
I will approach it from this perspective. If you are bent over enough at the waist and your shoulders turn around your spine at 90*…the right shoulder goes down quite a bit in the downswing.
If the right hip doesn’t go down as well, the right shoulder crashes into it. So how do you get them to go down properly.
If the right hip turns deep, up and away from the ball and you have lateral hip movement in the downswing, the right hip goes down. If the right shoulder follows what the right hip does, it goes down and around the spine properly.
So it isn’t that complicated.
Turn, tilt, turn.