Struggling with Mobility Aids and Doctor's Advice

I started using my cane again but now my wrist is hurting even with my wrist brace, I don’t have it with me currently. My mom doesn’t want to get forearm crutches until we talk to my doctor and my appointment is in the end of June. (and that forearm crutches are for people with cerebral palsy only??) I already know what he’d say, exactly what he said about my cane (that I only have pain because I’m using it and not getting my hips stronger??) Which I get sometimes, but I’m tired of waiting on a miracle. I know what works for my body and mobility aids are exactly that, if only my parents and doctors could see that. I took my doctors advice and stopped using my cane for 3 weeks and now guess what? I have knee pain! Money isn’t an issue, I am willing to put $80 down for crutches if it meant that I won’t be in pain 24/7. Sometimes I feel like just ordering them so I can just get them but I know my parents would kill me because of it. I’m stuck in a cycle: Use cane -> prevent knee and hip pain -> get wrist pain -> don’t use cane -> try and make it through the day -> in pain -> repeat.