Welcome to the board of Health care Magic,
Dear friend it is common to develop respiratory tract
infection recurrently. some times six to twelve times a year. and this frequency is labelled as routine normal.
This is more common especially in top fed children means did not fed exclusively breast milk.
Hygiene maintenance;- feeding bottle ,self.
Good nutritious balanced diet.
Avoid contacts with infected people.
Regular supplementation of multivitamins & Iron syrups to improve the immunity .
Hope your query is answered