My mom thinks i’m faking it

If you’ve read my previous post, you know that i just got diagnosed with paranoid schizophrenia, and despite all my symptoms and everything that my friend and my sibling and my psychiatric team and school tells me, i still feel like im faking it. And also, my mom just had a talk with my treatment team and told them im faking it. So now i feel even more elike im faking it. I cant tell whats true at this point. Please help.
For context, im 18 and i’ve been showing signs since 16 i think. I’ve been under observation for about a year and i’ve been hospitalised because of my psychotic symptoms at some point too. I just got my diagnosis a week ago.