Dear Mother,
As the Child is Covid Positive kindly consult Pediatrician until the infection ends.
As for the fever it takes time(~30-40min) for PCM to act on body, also check the dosage for the weight of your child. Are there any other symptoms apart from fever ?
Next Steps
* Consult a Pediatrician Immediately
Health Tips
PCM 4-6hrly
Tepid sponging also helps in bringing down Temperature a bit.