S.S.
My 13 month old just got over it as wll. We were in the hospital too! What worked for me as instructed by the hospital was to give her 2-3 ounces of pedialyte/juice every 30 minutes. I did this after the first time we were admitted and it worked great! She started eating more but still has severe diarrhea so I stopped and was just pushing fluids as much as possible, by day 12 we were back in the hospital! When we came home I followed the 2oz every 20 minute rule until one day after the diarrhea stopped...I was not going to put my princess through that again! Eventually it just stopped and she wa like new although we had about 4 pounds to put back on! I am sorry that you are going through this...I hope he is better soon!
Serena
P.S.
Like other posters said, be careful, my husband ended up with it as welL!