Thanks for your question
Seems like your child has a seasonal asthma
, but it could be also be due to many other reasons if recurrent respiratory infections like- congenital cardiac problems
For frequent episodes of asthma, you need to consider optimal steroids
and multi drug treatment.
Consider nebulizing your child with 2-3 different solutions after consulting with your doctor and also give steam therapy, honey, salt water gargles, coffee or tea, chocolates as these things have caffeine causing bronchodilation
Hope that answers