Quoting Man. Bear. Pig.:" I feel bad posting this in here with women talking about losing their children. I've been in here myself. ... [snip!] ... is a fine line between comfort and smothering, and I want to make sure I'm helping him the right way. I'm so very sad for him."
My dh went thru the same thing a few years back...just be there for him, let him know that if he wants to talk you'll listen, try to give him some space tho, it drove my dh nuts if i kept asking him if he was ok. i'm not sure about yours but my dh is a bit touchy feely, so if he was getting depressed or sniffly i would drop whatever i was doing and just hug him or rub his back, he said that made him feel better. sorry you're going thru this mama, gl.