Struggling with Inconsistent Face Contact

Hello, I’ve been working on shallowing my arms and trying to let my body rotation drive the swing (as opposed to my old pattern which was a more over the top arm pull). Overall I’m pretty happy with the way it looks on film. However, I have noticed that my face contact is very inconsistent. My worst misses tend to be shanks with contact on the hozzel. I notice that in my back swing my head tends to move towards the ball, is this the cause of my shanks or is there something else that might be causing it? Thanks, Dan