Flatline after 70 days?

I'm on the 77th day of Nofap, let's say that after the first few weeks I felt good, having no particular impulses, in the meantime I started to have good habits, like practicing sports eating healthy.
I thought it was all over but after the 50th day something changed, I started to be attracted to porn again, to have impulses and get excited with every attractive woman on the screen, even in the movies, I forgot what I'm fighting for and I came back erotic thoughts of falling into the trap, but is this drastic return possible after almost 80 days of nofap?
It is not the first time that I have fought this battle, a few years ago I had succeeded and for about 2 years I had no relapses, but I had stressful periods that made me fall.
It seems to me a kind of Flatline, but is it possible that it happens now after all these days?