My 8 month old has recently changed his latch. He latches on and then pushes away from my body with his arms, pulling my breast with him. He seems to want to stay this way throughout the entire feeding, but it is a very poor latch and it hurts me. I have tried to prevent it by not allowing him to push away, but he just gets fussy and keeps trying. I wonder if it is because he is teething. Has anyone heard of this happening, and if so, how can I teach him to stop?