Since your son experiences monthly recurring wheezing, his underlying airway inflammation is likely under-controlled. Asthalin is a rescue medicine for quick relief, and Montair alone may not be sufficient. For effective long-term management, daily Inhaled Corticosteroids (ICS) (such as fluticasone or budesonide) administered via a metered-dose inhaler with a spacer are the gold standard. They safely target root inflammation to prevent frequent attacks. Avoid using Maxtra long-term, as it is for cold symptoms, not asthma. Please consult a pediatric pulmonologist to transition him to a daily controller inhaler and identify potential allergic triggers.