Every day. Period. I would fight for that until you get it.
Beginners once a week is really tough to do. While I think it’s important for all groups to meet every day, I think it’s most important for beginners. They need consistency and repetition.
I’m mixed on after school band. Our top HS group meets after school once per week…but I don’t require that for the other bands. At the end of the day, you have to do what you can to make it work. We have the luxury of seeing our kids every day, so the after school stuff at the lower grades is minimal.