Hello girls ? Can you tell me if it's normal for all of us? My baby gi…

Hello girls ? Can you tell me if it's normal for all of us? My baby girl is 1 year old and has been sick for two months now. It comes and goes, with phlegm, a wet cough, and teeth popping out - eight in total, including the molars. She plays sometimes but is lethargic. We have done blood tests, vitamin checks, and are constantly in touch with the pediatrician. What can we do so everything will be okay? We clean up the phlegm constantly, but the cough doesn't go away.