My kitten is currently getting over a URI and he has a stuffed up nose, I tried hot showers and a humidifier is running all the time in our room, he currently is on medication so is there something else I can do? does chicken broth with 0 sodium help him? or is there a special medicine I can get from a vet to clear his nose? I keep it clean and since hes small I cant really get the mucus out any tips?