Ryn,

Why are they even bringing it up in the first place? How do they get onto the topic?

My advice would be that prevention is better than cure.

If they ask "how is he sleeping" just say "with his eyes closed" LOL!

If they ask "Is he sleeping through the night" just say "he's doing fine".

End of sleep conversation. Then they won't feel any need to attempt to try and tell you to CC?