need help

I recently made the connection that I am, indeed, a trans boy. I have looked online for binders and stuff, but then I realized that if I get a chest binder I will most likely have to come out to my mom and she constantly reminds me that I’m a girl more than once a day. If I get a binder, she will definitely notice, like “hey where’d your boobs go?” so I guess I could only bind for like one day a week. I could also say that the normal chest binders are like sports bras or something. I just need help with this badly, I can’t even imagine coming out to my mom.