I have a 4 month old with the same problem... couldn't find any Infant Tylenol cold at the drug store. seems they no longer make infant cold medicine.. We put vicks on his back, chest, and feet (w/ socks) after a warm bath. Also I got Little Noses infant saline drops, put a few in, wait a minute, then use the bulb syringe to suck it out. Otherwise, we propped up the head of his crib by putting 2 pillows underneath and lay him to sleep on his side (so at least one nostril stays clear). He's doing better, not as congested, but we've been doing this for almost two weeks now!
at 7:41 PM on Nov. 30, 2008