Thanks for your query.
Your child is having fever
which is mostly viral in nature and takes few days to settle.
as per dose 15 mg/kg 6 hourly.
Do sponging with tepid water.
Give plenty of fluids,fruit juices,vegetable soup and milk.
Do not force him to eat,his appetite will come back slowly.
In case symptoms persist get him evaluated by pediatrician
for further management.
Wishing your baby good health.