I was told a humidifier as well. preferably where they sleep. what I also tried, once with my 3 year old when he was tiny and now with my little guy was sit in a steamy shower for 10 minutes. almost like a sauna. it helped his breathing for a bit. it did go away on its own though. I understand how you feel because there is nothing to give him and you have to wait it out, but in the meantime you freak out because he can't breathe. your little man will be OK soon.
that's what his doctor said too lol I guess it will go away on its own. I think I'm gonna get a humidifier, maybe that will help if I put it by where he sleeps or even just in the room @jacey3,
because he is so little, Dr will only recommend saline drops and the bulb syringe to pull out mucus. my son was like that for 6 weeks. I could here the phlegm in the chest, but took him to 5 drs and all said his chest was clear. hope your little man feels better.