Mommies! I need help!

My daughter is a little over 2

She started coughing slightly on Sunday and now it’s Wednesday and has turned into a mucousy/wet cough. She also has a runny nose

Definitely sounds and looks like a cold

I am currently giving her the zarbees mucous and cough

She started coughing now in her sleep.. I’m thinking it’s the peak of the cold..

Is there any advice that I can to do help her

I just hate seeing her like this and it blows my mind that she still keeps a smile throughout the day while feeling so sick :(