My 11 yo dd has quite suddenly developed real difficulties in getting off to sleep at night. My children have always had really good sleep routines. She is often still awake at midnight but has to be up at 0630 to catch the school bus. By mid week she is exhausted and wanting day off school to 'catch up'.
I have tried breathing, night light, relaxation, soft music. If she reads she doesn't put the book down!