Hello mom, my son is 11 months old and we're in the hospital because of…

Hello mom, my son is 11 months old and we're in the hospital because of bronchitis. But tonight he started crying, it's 4 hours past midnight now. He cries even when I give him water. He can't cry anymore. I think it might be a rhinovirus. A nurse just brought Regidron. She said to feed him a little bit at a time. Can you please tell me what they give for rhinovirus? Or is this not it? He doesn't eat much because of his throat, and he's also sick. It's unlikely that he got poisoned. There's no fever. Just, he makes a glottis, even this Regidron. He