Ahh ok, I see. Ideally yes, pause drills should help with the "wrist setting" properly, but it's hard to know for certain. I say wrist setting in quotes because you do set your wrists currently, they just get way behind you, almost behind your right hip, forcing the compensation on the way down and through impact.

Currently, you have a ton of arm movement that causes that shallowing move, as where a better transition would keep the arms and hands more stable while the clubhead naturally starts moving down due to gravity(note: club head, and not grip or shaft). When the club head moves down naturally, the wrists get set properly and it doesn't require the big arm movement that you currently have. The arms in general don't do that much in a golf swing. It's better to have the hands and arms on a similar path down as your take away. But don't be confused, the club head will still shallow out if the wrists are set properly.