Hello, now a days viral fever is most common. Continue medicines as per recommendation. Start sitopaladi churna 3 gms 3 times a day with honey and 3 drops of ginger juice. Within 3 days symptoms will get relieved.
Next Steps
if after 3 days he didn't get relieved. then consult nearby ayurvedic doctor
Health Tips
1) massage with warm sessame oil adding 2 pinch of salt and afterwards hot fomentation 2 times a day.
2) give him light and easy to digest food. home made soups are best.