6 ωєєк σℓ∂ ѕι¢к?!

gυуѕ му 6 week old baby boy has an upper respiratory infection and We went to the doctor they said to use humidifier and sickroom and he's just getting worse! We tried hot baths also. Does anyone out there know of anything that could possibly help him?! He's absolutely miserable. He spits up his formula at least 6-7 times a day. No fever, he sounds hoarse and worse by the day. He's super tired and cranky. I don't know what else to do. Any advice helps.