When I first quit, I didn't go through insomnia like you describe. For me, the first week felt like everything was moving in slow motion. My head was foggy.
Whatever the symptoms, you are going through withdrawal. The only thing I can promise is that it will get better. You won't be suffering from insomnia for the rest of your life. Likely, over the next week things will start going back to normal.
I see that you posted roll - that's great! That's the secret sauce around here to staying quit. Post roll early every day. Make your promise, keep your promise. Refuse to cave no matter what.
Trust that your sleep will return to normal, because it will. Everything is better without tobacco.
RDB 1,016