Overweight 16 y/o male

So, I’m 16 years old, overweight, I might have gyno, and I’m 6’0”. I’ve been doing boxing for almost a year now (I do other workouts as well like situps, pushups, basic things like that),and recently, I’ve been trying to watch my calories. I think I’m doing pretty good, But it’s hard to count my calories because I just eat what my mom makes. But she makes healthy food all the time. My mom is super healthy. Anyways, I’m just looking for some advice or suggestions on how I could lose some fat. Anything helps. 👍