Footwork in relation to power production

Hi Paul,
In this scenario, I'd think of it like learning a partner dance move. You learn the feet. You learn the arms. Then you learn to do them simultaneously. Yes, I'd probably start by working on the lower body pivot, but you'll also have to downregulate the arm pull and get the arms a little shallower to match. I would probably combine the two movements into a delivery position drill practice.
At your delivery position (see photo), your arms appear a little steep and your body will have to stall and stand up a bit to shallow things out. That would encourage your body to move into the toes.

So practice a little lower body pivot and then combine that into a delivery pump rehearsal should help clean up the foot pressure location :)