An Upper Respiratory Infection is just a fancy word for a cold. There's nothing you can do except let it run it's course. You can do a lot of things to keep your baby comfortable like running a humidifier next to her bed at night(if you don't have on then just turn on the hot water from the shower and get the bathroom nice and steamy and sit in there for about 20 minutes), keeping her upright when sleeping, put some saline drops in her nose and suction it out especially before sleeping,a nice warm bath before bedtime to let the mucous drain out, making sure she's drinking lots of fluids, and keeping her lightly dressed. You can also do Tylenol or Motrin generics if she's getting really fussy, but if she's happy and still playing around, then I wouldn't give her any medicines. If the fever starts getting high then I would give her some Tylenol or Motrin and put her in a lukewarm bath. But just hang in there!