Generally fever last for 5-6 days in any viral fever... Paracetamol is very safe drug u can take 2gm daily. Sumo tab is NSAID group it affects platelet function n in dengue Der is decrease in platelet count. So avoid any NSAID like sumo, combiflam, diclofenac.
Next Steps
Monitor Hemogram. Continue paracetamol 8 hrly n sos. Plenty fluids min 2 lit per day.