There a days where I mastrubate like 8 times in a row(only through thoughts no porn), basicly mastrubating myself into sleep so to speak! Today I only sleept like 3 hours. It's the feeling of not being satisfied that distracts me so much! Just do it one time more... It's hell!
I know that feeling. Once you don't get over that barrier of the first MO and then sleep right away, you just need to do it more and more. Trust me that once you make it past 3 or 4 days, this PMO caused insomnia will go away. I suggest not drinking any caffeine during the days that you wish to start your nofap journey. Caffeine causes the thoughts to go hyperactive and it doesn't stop easily. Maybe you don't do coffees. But if you do, try it out. Depending on how bad your caffeine consumption is, the worst withdrawals can last up to a week or even a month if you are a heavy drinker. I wish you luck mister!