Heat coconut oil n add a bit of camphor to it.. Apply this to baby 's neck n back...

you can follow external remedies as Sumira has shown ..but don't give any thing to eat as medicine without doctors concern as baby is too small. add few Nilgiri oil near babys mat,pillow sheet it will give relief..,cover baby properly so she doesn't get much cold . breastfeeding is best to relief baby. if you see cough us accumalting much please don't delay consult doctor

Go through this article very helpful <a href="http://app.babychakra.com/article/2234"><u><b><font color ="#3b5998">6 Pediatrician Approved Natural Remedies For Cough &amp; Cold in Kids</font></b></u></a>.