@StuntNun well done - fantastic!
@amr78 and @Alwaysplayspicc perhaps the balance is easier with woodwind. DD2 isn't finding the specialist school music very brutal at the moment. Maybe she should be finding it more brutal(!) And maybe sixth form will be worse.
I guess if DD2 was serious about a big solo career (fat chance on bassoon) they'd be making her do more practice. As it is they are very tolerant of someone who is still flirting with whether it is conservatoire she wants or a degree in English Literature, and they always say they're very happy with her.
What I will say is that the thing that has helped DD2 to want to practice more is that everyone else is doing it. When you're the 'weirdo' at your school who plays instruments and everyone thinks the half an hour a day you are doing is very extreme it is easy to feel that you're an outlier.
When both your roommates practice daily for quite some time then obviously you do too, even if you whinge about it. It's just normal. Even if it does make your academic teachers a bit grumpy. So there's no real pushback against it.
And I guess when you are in tons of ensembles maybe you are always 'practising' in some way. Some days DD2 might have a one hour one-to-one lesson, a quintet, a choir practice, a double reed ensemble, a flute ensemble and a symphony orchestra sectional (that would be quite a normal day) as well as a practice period and early morning practice and her school lessons. By the end of a day like that she's done quite a lot of playing, and I guess it all adds up.
The boarding does give them lots more time - it's a very efficient way of doing school so DD does get more playing in.
Having said that, @amr78 if DS doesn't want to go I don't think he should! It really has to be their choice as they have to own it and live it. My DD1 would HATE what DD2 does all day, but DD2 just keeps adding more and more of it.