7 month old is sick.

It’s that time of year where all the colds/flus start coming in. I️ have been sick back to back, and this second time my daughter got dragged along. My daughter has a lot of mucus built up in the back of her throat which makes her cough sound horrible. She is able to breathe through her nose. I️ was wondering if there’s anything I️ could do for the mucus that’s stuck in her throat? I️ hate that she sounds like this. 😔