Asthma – chest congestion in the early morning

Patient: HelloI have had asthma problems when i was in the gulf.But after coming back to my home town,it had gradually reduced.But from last 1 year,it has again increased.In the day time,I am fine but around 5 and 5:30 in the morning,I cant seem to breathe and have congestion in the chest and I have to take the inhaler.From last 1 yr, i am taking ayurvedic medicines also,but they have not helped so far.Please advice as to what can be wrong.