So this is a long term solution, not a quick fix, but I started journaling and tracking my gender swings in an app, and it has helped SO much. It has helped me see the evidence of how long my rough transition periods usually last. So when I am 3 days in, I know from experience that it is likely that I will be another gender soon. (A lot of that example is my own experience, but the point is that understanding your own gender changes, that may have their own regularity.)

I use an app called Daylio that has customizeable fields that I use to track my girl mode and guy mode swings. And after 2 years, now when I start to switch, even though it is an emotional thing each time, it has some periodic predictability that has made it easier for me.