I just got caught up on your thread. Wow lots happening here.
You have been in good hands. I add my vote to LNL. Such good intentions and yet to H it is like a tidal wave. Make the water calm and inviting. Offer a suggestion and leave it. Sometimes just a simple "OK". Like when he said he just wanted quiet. Smile, OK and maybe a small peck on the cheek and go downstairs. Don't spend so much time explaining how when why. Just calmly go do it.