Brief Answer:
As explained below

Detailed Answer:
Hello, and welcome to 'Ask A Doctor'

Thanks for posting your query.

I have gone through your query and understand your concern. I would suggest you to give him multivitamins such as syp. Bevon 5 ml once a day for increase in appetite. If your kid enjoys eating gummies you can try them too. You have to deworm your child every 6 months. You can give him syp.zental 10 ml only once every 6 months. Try and feed him atleast 6 meals a day.

I hope this helps. Please feel free to discuss further if any.
Regards,

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