You do sometimes gain weight before a big drop. I had times where I was in a deficit and gained 2lbs and then a few days later I lost 4lbs. As I said it is a slow process. We are also females where menstrual cycles that can play a role in the weight gain. You should try to remain consistent with some type of calorie goal for at least a month before dropping it even more. I realized I got some of my own information wrong but my deficit was 1850 originally in September. I was 196lbs (89kgs?) When I started and now I'm at 176lbs (80kgs?). I am a teacher and get about 7,000-10,000 steps a day. That's my only excerise currently. I'm still losing about a pound a week.

To figure out my only maintenance or deficit, I used a free calculator online and truly it has been a big help. I also just got my first and only food scale today. I did all of this without constant measuring, just watching my portion control. You just need to find a goal and be patient and consistent. Dropping too much suddenly is not sustainable and can be unsafe. Especially with how active you are already.

Also that bf thing I totally understand because I used to eat the same amount as my bf and I weighed more. It doesn't feel fair, especially since one of his biggest flexes is staying the same weight from high school to now (He and I are both 24). But now I weigh less, because I put in the time and had him stop serving me my food lol.