Hello folks. I am trying to LD using the FILD technique. It involves waking up after exactly 3 hours of sleep. I usually set my alarm clock in 3 hours and 15 minutes where the 15 minutes is the time to sleep. However I cant wake up. My alarm on my android tablet won't wake me up. What can I do? Anyone can help me how to set my Android alarm clock so it repeats till I disable it?