I want to wear hijab but my mum says no

I want to wear the hijab but my mum keeps insisting that i wait till I’m 18.

I know it’s an obligation to wear the hijab but every time i try to bring up this conversation she always dismisses it or gives me a death stare or completely ignores me. My mum was forced to wear it when she was younger and wanted to take it off (she didn’t). I fear maybe she thinks i’ll do the same thing. Honestly i hate the hijab on me but i know it’s obligatory and i know i should. I also think if i wait till IM 18yrs I’ll be in university and it would be a lot more harder for me to wear it.

i want to make the people around me proud by putting it on (and allah swt obviously) but i dont want my mum to be annoyed at me. (P.s my siblings all wear scarves)

I want to wear the hijab but my mum says wait till after i get my higher school certificate i don’t get what the difference is tbh…