Seeking Guidance for My Child's Persistent Cough and Runny Nose - #51926

My child is 4.5yrs. since 2.5yrs he gets a runny nose , which then moves into cough which is more when lying down and also moves to daytime.. sometimes it is with phlegm sometimes dry . Depends on symptoms. We have been given fenixa / levolin and sometimes fenixa / soventus jr. Based on symptoms. Everytime symptoms have reduced and he has recovered. Took a while to know it's allergy and we also stay near the lake . This time he got and after a course of fenixa and levolin it was getting better , summer season set in very hot this time and runny nose didn't stop and now since two days the cough has started in the night .doc this time suggested nebulizer which I am hesitant to give , same levolin. Pls guide me. I don't see very severe but doc said it's wheezing . I don't see him snore at night. No difficulty in breathing and also very active during day . Pls guide me . Ayurveda Has helped me, i am confident it will help my child. If there is a way ,I will consult ayurveda doctor.