My mom a few weeks ago got two baby chicks, one is almost got all her feathers except for her head so not sure how old exactly. She began sneezing a week ago with fluid an now holds her beak open to breathe, you can hear her trying to get air and it’s awful. I’ve tried vet rx, I have human antibiotics an heard you can crush them up an administer in syringe but I don’t know how much. Help I don’t want her to suffocate! No vet near me that takes chickens