Our DD13 has struggled for years with the same situation. She just cannot "turn off" her brain. We used melatonin for a couple of years. It worked very well, but there is concern about its long term use. We tried white noise, exercise, snuggling, you name it. Her current doctor recommended lots of cardio during the day and boring activities right before bed. As DD13 is now a high schooler who isn't keen about following doctor's advice (sigh), I don't know if that is working. I give melatonin only the night before high stakes testing (PSAT, Finals, etc)
