E.J.
Hi K.!
You guys must be exhausted! Hang in there, this will soon be over.
Did you check with your Ped about any secondary complications?
Does the 10m old sure a room with the 2 year-old? Can you move the 2 year old for a few nights?
Do you stay in the room to feed him?
I didn't think my last one would ever sleep through the night!!! What helped was waiting (a long) 20 minutes before running to him. Then rocking him for a few minutes before offering a bottle to see if I couldn't soothe him back to the zone. Then if all else failed I feed him in his room completely silent and dark and to the point. The minute he stopped feeding...back to the crib and wait for a few minutes before running back. This probably took about 3 nights.
Just remember.......he doesn't understand the connection between waking up at night/feeding and the illness. You think it's done....so should waking up be. But he enjoys seeing you and wants to keep it up. Just let him know it's back to the old routine!
Have you read Dr. Weissbluth's book? It's not for everybody, but I found his information useful. It's hard to think with little sleep and I found his book was good to reinforce what I already knew!
Good luck and hang in there! Hang tough!