Undergrad majors to become a neuroscientist

I have an extreme interest in becoming a neuroscientist so I can research and cure diseases of the brain and I have to go to med school. The internet research I have done has said my majors don’t matter as long as it is lab related. I was thinking I should do a double major in biomedical engineering and neuroscience but I’m not sure. I’d love help and advice on what I should do. I want to go to Johns Hopkins and I’m currently a sophomore in high school with a 32 on the act but I just want to plan ahead for my majors and I’d love some advice. Thank you!