Advice needed... MO after nightfall

NoFap community your views and opinions may be helpful here.

While you are on nofap and you have a nightfall that is not considered a reset. Issue I am facing is when I have a nightfall I end up waking up right after it and while I try to go back to sleep,I fantazise myself having sex, copying the in and out motion during sex and endup climaxing. This usually happens to me in moarnings when I am partially sleepy or still trying to get-up in the morning. Is this action of MO after a nightfall hurting my progress? Is this kind of action permissible in nofap specially when you are not doing hard mode NoFap?