Thanks for your query.
I understand your concern.
I suggest you to :
every 6 hourly as per dosage 15 mg/kg body wt.
-do tepid sponging of whole body.
continues to be on higher side give mefenemic acid.
-give plenty of fluids and soft bland diet.
In case fever persist beyound 48 hours get him examined by pediatrician
to see for any focus of infection and treat accordingly.
Hope I have answered your query.
Let me know if I can help any further.
Wishing your child good health.