Hi Vanessa,
I am using this pigeon tube mucus suction to remove the mucus.
Once you succeeded in removing the mucus, your lo will feel much better when she drinks milk.
www.pigeon.com.sg/product_uri/health-care/nose-cleaner-tube-type/
You may try the onion remedy too. Cut one onion to put around baby cot or the place he is sleeping.
Put vicks at his feet area and cover it with socks.