Another night of 3.5 hours of sleep. Except I can only naturally fall asleep at 7 am. If I take melatonin do every meditation possible nothing works.... until 7 am and then I get the natural urge to sleep and I sleep deeply and great! Until.. 11am and my heart rate shoots up and I can't get back to sleep. Does anyone know what I can do to shift this to a normal sleeping time?