Hi, thanks for using health care magic
Viral illnesses like the common cause can be associated with 2-4 days of
intermittent fever. Regarding the medication, you have to make sure that you are giving him enough based on his weight. In some cases where the temperature appears to be unresponsive, it is because the child is receiving a low dose.
He is to receive 15 mg for each kilogram of his weight.
In addition to the medication, you can tepid sponging , cool liquids and the use of fan therapy.
If he is sleeping then let him rest, if he wakes and is still febrile then you can give him another dose, but he needs to sleep to recover.
He may need medication to help with the runny nose and
cough. A topical or oral decongestant with an antihistamine will help with the nasal symptoms.
I hope this helps and he feels better soon