my baby is 21 months old she is getting lot of cough during night we used a lot of medicine ( syrup) but there is no use what to do

A. lot of cough .. gv a spoon of honey or a glass of milk before bed.. boil some tulsi leaves in a cup of water with crushed ginger till it is half then add honey and gv 2 to 3 sp thrice a day use Babyhug rapid relief baby rub