PM-Mode Day 20 Relapse seeming imminent. Is this a phase?

I'm on day 20 of PM-Mode.
It's gotten a bit rough. I'm dealing with chaser effects as I am still sexually active with my partner. When they aren't here (works some overnights) I find myself having the porn cravings set in, and get pretty intense. I have been able to control those urges so far. My partner and I have been having relations almost daily since I hit 13 days. due to my addiction, our intimacy was lacking pretty bad. We would partake in adult activity maybe once every two+ weeks pre-nofap. It created a problem in our marriage, that's what basically made me decide to make a change.
Today I thought everything was going okay, in fact we were intimate earlier in the day. We both work in the morning, it's currently 4am and I am craving an O again. Idk what to do. I'm hoping this is just a phase. If anyone has any advice on this I'd welcome it.

I am a gay married FTM. this is my first post, so I'm sorry for formatting or anything else I may have messed up.