Apply Vick baby on the chest? Also can go to Yuguo TCM if you want to try, it does work for my son. Due to their age, there’s really limited medication. You can consult PD too.
I use the Santecare Breathe Easy patch. It’s stuck on the clothes and has some oils that help making breathing easier.
Best to consult a pediatrician...
Humidifier But consult pd
Humidifier might help
Vicks rub for babies