Right now, flexing him to the inside while asking for vertical flexion at the same time has become his new happy place. As soon as he gets choppy, I ask for it. If his head flies up, I ask for it. If he gets quick, I ask for it. Rather than feel irritated or pressured, he seems to find relief in being shown a way to stretch down. It's as though I am finally asking for the stretch down in language that he can understand.
Another step forward!