Need Help With Fild

Last night, I tried to FILD. I fell asleep a little past 11:30 PM, and woke up with an alarm at 4:00 AM. I sat up in bed, then realized it wasn't morning yet and laid back down. I thought about FILDing for a bit, then as I felt drowsier I tried it out. I started moving my fingers, just barely, and as I did I felt like my body started vibrating back and forth. It was a really weird experience, but I felt the pillow below me and kept going after thirty seconds.About five minutes later, I did a reality check, but nothing had happened. I was still awake.Does anybody have any insight as to why I might have FaILeD? I know that during a normal WILD there is a swallowing reflex you have to stop, and I felt like I had to swallow my saliva halfway through the FILD attempt. Does that affect your FILD too? And did the vibrating sensation happen because I was starting to go into the dream?

Using an alarm to create a WBTB scenario was definitely a mistake I found online today. I found that people say they can wake themselves up mentally at a certain time during the night. I'll have to try that out. Thanks for your input. :)

So you are saying that I should try not to focus on anything?