Hello all, this is my first post on Mumsnet after lurking for a while 
My eldest daughter (DD1) is 14 and in Year 10 at a grammar school. Since starting this school year, she has been extremely exhausted with the workload plus the other activities incorporated into her day. For example, on Monday she attended school band practise after school, and didn't return home until 5pm. When she had eaten her dinner and practised her instrument, she then did 2 hours of homework and almost 2 hours of revision, then showered and ended up in bed exhausted at 11:30/12pm - she has to get up at 6:30am.
I have seen her workload and DD1 is not a procrastinator, she really does spend this time working and is a high achieving student, aiming for A and A* in her 10 GCSE subjects. But this long workday is concerning me as I am worried that she is not getting enough time to relax and enough sleep.
Last night she told me she felt exhausted and just wanted to sleep all day
she hardly ever complains unless she is genuinely having a problem. I have suggested dropping some of her extracurricular activities, but she was very upset at the suggestion, she is very musical and loves to perform in the school choir and musical groups, as well as dance lessons 2x a week and volunteer work on the weekends (for the DofE award)
Last year she was most definitely working a lot less, but this year she is putting in so much work and I can't see any way in which she could do less whilst maintaining her high grades. The teachers all say that she is a model student and a kind girl, but I don't like to see DD so exhausted, she sleeps for almost 16 hours on Friday nights, and her workload is noticeably much more than that of her siblings (also of high school age, but in KS3)
Is there any way in which I can make this situation better, or is this normal for year 10?