My girl started band in the fall, not at the beginning of the semester. She transferred into the class from Choir. I made her take a music class because I think it's important.
She won't bring her flute home, she won't practice, she won't even bring her flute home after school or on breaks.
I figured she just isn't that interested in it.
BUT she moved from being a beginner, had to take 6th grade beginning band all first semester. She wasn't working on music at home so I figured it was a flash in the pan sort of thing.
The band director called me near the end of last semester and told me he had concerns about putting her up in 7th grade band. That the other 7th grade flute players were excellent, so excellent he can say he's never had such an excelled group. So he had concerns that she'd move into 7th grade band, be last chair, and never move up.
He wanted my promise that she'd take private lessons to bring herself up to the rest of the groups standards or he could leave her in beginning band. I committed to private lessons because I have 2 friends that both play flute, one of them in studying music in college on scholarship, she plays flute, and the other played all through school and then into college and still plays for entertainment now.
I figured I could get them to help her out and do a few private lessons so she could play for them and they could help her get past any problems.
She moved up, was last chair. Still, never brought her flute home except on lesson day. Then she'd come home and leave her flute in the truck.
She didn't practice at all, got that? She did the same thing with piano when she was younger, played excellent for a beginner. Same thing with voice, she has a crystal clear soprano pitch and had a beautiful voice. After private lesson time she wouldn't practice.
She moved from last chair flute up 3 chairs the next test time. Then she moved up another couple of chairs next time. At the end of the school year she had moved up to 3rd chair, out of about 9 flute players. She didn't practice, went through an exercise once a week or so for fingering, she was still technically a beginner since she'd started in September.
She had moved from 6th grade beginning band up to 7th grade band and had moved into a group that was an example of excellence the band director hadn't seen before, and she didn't stay in last chair but actually passed 8 other girls to make it up to 2nd chair.
So practicing at home isn't a signifier of talent or interest. They might love the guitar or piano or some other instrument and never once practice at home.
Don't nag, don't do anything. If you just have to be that mom you can remind them once but then no more. If they don't practice their consequences is when they plan in front of their teacher and they can't do it. Let the teacher handle it. Let the teacher be the one to say "hey, you stink because you won't practice, your mom is wasting her money on you".
Talk to them when it's time to sign up again. Ask them if they want to continue the lessons. I think if they say they want to stay in it that I'd keep them in it. It's not going to waste.
But I would also find band classes for them as soon as their old enough to take in school so they can participate in a full out music program.