Hi, thanks for using health care magic
Early morning and late evening cough
is normally thought to be related to reactivity of the lung airways.
He may not be asthmatic but have hyper reactive airways.
He may need a few days of a reliever inhalor, it can be given a 1 to 2 hrs before he goes to bed.This can be combined with a mucolytic
which would reduce the congestion in his chest.
I hope this helps,