I tried it 4 nights in a row when i typically wake up at 3am. I'm never able to fall asleep during the video. However I fell asleep shortly after the video was completed 3 outta the 4 times. I've never used binaural before. 

 Is there anything I can do to try to fall asleep during the video? Perhaps  I need to keep trying more until my body adapts to the video and then will it be more effective?

Or if I'm waking up after 4hrs of sleep, should I try using the C or D cycle video because those videos coincide with around the 4th hour of continuous sleep? 

Appreciate any advice. Thanks
In your case, I would suggest:
1) Using the gentle track instead: http://bit.ly/binauralbeginner
2) Establishing a pre-bed routine!

2 hours before bed:
- stop stimulation -- no work, no games, no studying, etc.
- put all your screens on night mode (even better, turn them off entirely)
- lower the lights in your home; if you’re using bright white lights in your home, turn them OFF!
- for best results, wear red laser goggles to completely block blue and green light
- do some light exercise, stretching or go for a walk
- do some journaling, brain dump whatever you worked on today, so you aren’t "thinking of stuff" while you’re trying to sleep!
n lewis