FILD (First Attempt Failed) Need Help!

After 4-5 hours of sleep my brother woke me up.
I changed side(on Back) and tried to do the finger movement, it didn't work(Maybe I wasn't tired). So, I thought about to wait until I am more closer to the sleep. When I was close to the sleep I started doing the finger movement. In seconds my body started delving into some darkness, it wasn't a common darkness. It was like my body might takeoff at any moment, my breathe pattern changed, my fingers were going out of control I wasn't able to control the pattern of tapping, saliva was building in my mouth so I had to swallow as well. My body was going out of control, it happened twice and then I failed. I tried to sleep a lot after that but I was unable to sleep. It all happened 2 hours ago and I am awake(Only slept for 5 hours).

Can someone please help with these points? :-
1. Swallowing saliva takes me to the reality, what to do?
2. Do I have to focus only at finger tapping?
3. What to do when I start delving in darkness and everything goes out of control?
4. After waking up after 5 hours, how many times can I try FILD before going back to sleep again?
5. My cooler's sound is a bit high but it never annoyed me, can this be a problem when attaining lucidity? Like cooler's sound can make me realize of reality?

Thank you!

The FILD technique doesn't usually take that long, if done correctly it should only take a few mins from waking and you should transition.

The trick is to try not to move your body when you wake up. Even the finger movement should be minimal, the movement of the fingers is so you can maintain awareness enough so till you transition into a dream.