When can I expect to flatline?

After being a busy bee for some time, I almost forgot that flatlining is part of the challenge. My question mostly is, when can I expect it? And how do I recognize it?

I'm almost three weeks in now, did have a nocturnal emission two and tree day's ago, so I don't feel that horny at the moment. I did relapse once with thirty seconds of porn around the reset (18 day's ago) and was porn free for two weeks before that. I still have morning wood and before nocturnal emissions the horniness was knocking my brain around like crazy. It might be that this is temporarily, but i'm not a hundred percent sure.