How do I ask?

Hello, I assume most of you know what the sunflower lanyard means. If not, you’ll find it by looking up “hidden disability sunflower”.

I want to get a lanyard because it makes me feel supported, safer and I want to spread knowledge on what it means. I’m a minor so I can’t order it myself yet. I wouldn’t wear it everyday but whenever I feel the need to. My mother is mostly supportive but my father doesn’t even want to acknowledge that he has a disabled child. My mom never orders anything for me because she’s not big on technology and only uses online “shopping” when she has to. So I’d have to ask my dad. I’m a little scared to ask him (even though he would probably only be like “you don’t need it. You’re normal and not a {certain slur}” and not yell or worse) and I don’t know how to ask.

Does anyone know how I could ask?

(Please excuse my grammar/phrasing. English isn’t my native language)