Sorry to hear that your little boy is still so sick. I went in to get some kid's sudafed and now that is off the market! So you are right, there isn't really anything. I do wonder about using Afrin like Fissy suggested. Maybe just a small squirt. Also those nightlights with the vapors work well and the menthol creams. You must be so exhausted. I hope you slept well last night though.
Do you guys take digestive enzymes or probiotics to help with digestion? I use miralax every morning just for some insurance. Maybe you could try a small dose.