“Get a comfy chair and have him stretch his legs out straight. Sit on top of him with your legs stretched and rock back and forth like a playground seesaw. Or do it on the steps, using them for leverage. He can lean back and support himself with his elbows or hands while you sit on his lap. Using your hands for support, you can move up and down, controlling the movement for a position you can call 'the stairwell done.'”