Dear Sonal, hello.
Before answering your query, I want to know whether your baby was born preterm or premature at the time of delivery?
Children below 5 years tend to develop recurrent infections due to low immunity. If your child has allergy
, this frequency increases. As your child has started going to playschool, there are chances that he develop infections more commonly as he comes in contact with other children who may have some infection and is transmitted to your child.
It is good that you maintain hygeine in your home. Try to teach good healthy habits to your child from early age like washing hands before eating in school also. Majority of diseases are prevented just by washing hands before eating food. Also encourage him to drink pure filtered water only. Eating fresh fruits and vegetables also helps in prevention of infections.
And last but not the least vaccinate him fully at appropiate time.
I hope this is helpful.
Thanks and happy parenting