What's the best cough remedy for a 2 month old baby?? :)

Hi mommy! When my daughter was that age and had cough, I gave her oregano - very effective and safe pa. What I did was steamed 2-3 leaves (washed) oregano leaves or simply put on top of cooked rice, cover until the leaves soften. Then squeeze its juice in a spoon and feed directly to baby. The phlegm comes out when she poops.