This probably might be a long post, but I genuinely don't know what to do.
I am a closeted teen living in a non-muslim country. But this isn't about me. This is about my siblings. My sister has a good head on her shoulders, I think someday she'll figure out she's exmuslim and leave for good. She never confirmed it, but she always complains about salah and quran, also sometimes asks certain questions about Allah. I'm not worried about her. I'm worried about my brother. He's really young and believes everything he is told about Islam. In fact, sometimes he'll comment on how girls wear shorts in his class and it disgusts me. It's probably because of all the yapping my parents does about what girls can or can't wear. He's always constantly defending Islam whenever my sister complains about quran, and he's learned to always say "salalahu wasalam" after saying Mohammed's name. He also goes to an Islamic Sunday school. I know I can't watch him become a Muslim, but I really don't know what to do.