Just wondering what will happen if I stop feeding on the left side?

It's just becoming impossible to feed on the left, I partly blame the shield but mostly DS just hates it! I try to get him to empty it every few feeds but really feel like I'm forcing him. And when he does go on he won't attach properly and is only sucking our what dribbles into the shield. He will attach better in football hold but I literally have to force him and it's breaking my heart, it's just not good for our relationship.

The boob seems so stay fairly flaccid during the day but at night it explodes! I go through 2 maz biggins BPs per night just on that side, it even makes it thru the PUL layer.

So my question is if I stop feeding will it dry up? Or will feeding from the right still stimulate the left?
My other option is to feed from the right and express from the left.

Thanx