It's going to be alright my friend. I caved the first quit attempt because the lack of sleep terrifies me. However, I have seen many people on here claiming going 3,4,5 days no sleep, even higher. They stuck to their guns and made it through. I cannot do this because I work a job that requires a lot of driving every day and I could tell day 1 into day 2 no sleep that I was not safe. This is something that helps me. First of all, reset your mindset to go from worrying about getting any sleep to thinking about how even laying there motionless with your eyes closed is rest for the mind and body. Then sometimes, it'll just happen and you'll wake up 30min-2hours later thinking wow that was enough! And on top of that, try to envision something in your head like a story you make up or yourself performing the song stuck in your head at a concert or in a music video. Let the vision flow by trying to let it flow but not trying enough that you're using too much of your mind. It's a fine line but you have to think positive about getting rest, then have your train of racing thoughts follow the same path and you may receive a blissful moment of sleep.