Hi R.,
This won't help with eating, but it might help with nutrition. I have a very picky 3 1/2 yr. old Daughter. Whenever she gets strep which has been about 3 times and she has had Bronchitis too many times to count, stupid preschools, any way I always give her V-8 Fusion and I give her the adult stuff not the Juicy Juice Version, and here is why it has a whole adult serving of fruits and a whole adult serving of vegetables in just one 8 oz. serving. I asked her pediatrician and he said that it was a great idea. I also buy those gummy vitamins and she thinks she is getting a treat, and last week when she had bronchitis, I found suckers with vitamin c and zinc for colds, buy the cough drops, these helped sooth her throat from coughing so much and she loved them kept asking for more, they can have up to 8 a day according to the bag. If your son isn't too congested you could always try the nutritional supplement drinks like Pediasure, they have a generic version at Wal-Mart, that is quite a bit cheaper. My Daughter always liked the Strawberry and Vanilla and hated the Chocolate even though she loves chocolate everything. Hope this helps and good luck with the sick baby, I know it kills me to have to see my daughter sick, and then to have to keep sending her back to Pre-School when I know that is where she is getting sick, but several friends I have that are Elementary Teachers say that when ever they start school they will have a very sick year, and my OB/GYN said that it took 2 years with her Son, so if they don't go to Pre-School they will be sick when they go to real school, and my Daughter needs the social interaction and she has problems with her speech and the school seems to be helping, so I am trying to look at the positive side. Hang in there, just try and give him lots of fluids that will help with the fever and the sore throat. The items I mentioned are pricey, but worth it to me when my child is sick and won't eat at all.
Thanks, M..