[Mud Ball]

Hi - my first post here. I'm after some thoughts and advice on stopping excessive head movement.
My tendency is to come over the top and pull shots left. It can be a card wrecker!
I noticed when I watched a video of my swing (down the line) that my head moves slightly down but also it moves 'in' away from the ball (imagine a tortoise). Giving me a crunched neck appearance!
I think it's from having an incorrect transition or perhaps a reaction to a faulty backswing.
My current approach to fixing this is to practice swings with my head resting against a wall or door and trying to keep contact with it through the backswing and downswing and through impact.
This works great without a club in my hand and in the kitchen!
Any help or ideas would be appreciated, thanks.