Suggest some ayurvedic medicine / home remedies for recurrent cough for my 3 year old child?

He got pneumonia at 2 months. and henceforth he is suffering coughing so far. I think this is asthmic condition.

Tulsi ras mixed with honey three times a day. pinch of powder sonth pinch of pepper (dried ginger) in milk powder with sugar jaugery.

acute bronchitis and exercise