Lost voice

lu

Hi all just looking for some advice. My boyfriend got sick last Friday (sinus issues) and since I believe Saturday or Sunday he lost his voice. I mean he can talk better then when it first happened but it’s still not normal. He just went to the doctor today and found out he has an ear infection and they also gave him pills for his throat because his throat is dry . Are there any other remedies / home remedies he can do to help with his voice?

Tia