Think of the reason why you started nofap bro... Guess atleast that will keep you motivated towards trying again and and achieving success eventually.... If without any purpose you are starting nofap, then it's going to be difficult....
Flatline can be your friend. It can make you pass the withdrawal more easy. I had flatline 90 days of reboot, it's gone and came back again. The symptoms I have experienced has been foggy mind, ED (but i had morning woods) changing moods, nightmares & poor sleep. It's not over.
Flatline passes. Also, it is about accepting that your natural sexdrive is lower than you pmo sexdrive. And that is a good thing, but hard for the ego to accept. During reboot you might also feel a bit down and unmotivated. Makes sence too; p is a sedative for our problems. Without it we need to actually deal with it. Takes a bit of time to do the things you ignored for so long.
Flatline can help you in nofap as the urges Wil be so loww... But but but, it can be a trigger also for relapse, you start feeling that your penis is broken and might not work again at all, so your brain tels to just check once if it's working or no, and tat will be your relapse ...