I have four 11 day old kittens, all diagnosed with URI and on antibiotics for two days now. But the boy was the most sick at the vet and he seems to be getting worse. He is having trouble breathing, seems very labored. I have been feeding him formula with a syringe ( nose to stuffed to nurse) and steaming him in the bathroom. Is there anything else I can do? I spent all the money I have taking them all in to see the vet this week, and I don't want to lose him. Please any help would be much appreciated.