Hello girls, how to treat a two-month-old baby?

Hello girls, how to treat a two-month-old baby? We have a temperature of 38.5 and his throat is a bit stuffy, said the pediatrician. The doctor prescribed an antibiotic only after it became less severe, she told me to observe for 2-3 days then prescribe a hospital stay. She advised him to take Suprastin at night, candles, and lower the fever with Ibuprofen. Can you tell me what antiviral drugs can be given to him? I'm afraid that in 2-3 days, it might get worse.