CRP Level 64. 5. Is there any serious?

My son is suffering from Fever(99 to 104) since 4 days and cough since 10 days. Doctor suggested for few tests and in result CRP level detected as 64.5 . Doctor suggested for antibiotics(Monocef 1mg thru canopy) for 4 days, does CRP level gets down after taking antibiotics. Do I need to worry for the value what we have got now. Is there any serious ? Please suggest as we are very much worried. My son is active and as usual when we put Calpol , and when body temperature increases he becomes dull. He is having food and fruits as usual and drinking enough water. What are do's and don'ts to reduce CRP level to normal . What precautions to be taken to maintain CRP level normal in my son. Thanks in advance...