102 temperature 29months old. Symptoms.

My lil one suddenly woke up with 102.2 degrees temperature today morning. Gave 4ml crocin but there was no much difference even after one hour. He is 13kg and 91cm . Then after his breakfast gave meftal p 4ml.fever reduced for few hours but by afternoon it gone to 102.2 again by the time he got up from his nap post lunch. Gave meftal p 4ml again..temp is not reducing ..for sponging the temperature is reducing to 99 and again it's increasing .please suggest what to do asap. He stays at home..and been diagnosed with peteriasis rosea 20days back and using flutavite cream ..he had 4 motions two days back but fine today..his father goes out for work is there anything to get worry about covid19 or what medicins needs to be given to him now. No runny nose or other symptoms.