The easiest and most correct answer, though, is "ask your district administration."
It's entirely up to them. My district has mandated no singing or playing of wind instruments indoors. There is no timetable to change that.
Your district may choose to follow county guidelines which may state "no wind instruments or singing indoors." Your district may choose to ignore that.
This decision comes from your superintendent and their designees. Not you. Ask your higher ups.