Got another "Good night" last night. Boy these are tiny babysteps!
H got a bit over his funk. Said he didn't want to go down his list of stressors late at night (when we were talking) so I suppose he's not keeping it from me for any particular reason. You were all right - just letting it go and not taking it personally was the best plan.
He is back to speaking to me with calm and courtesy - another small baby step, but a couple months ago I never thought it would happen.