Need a brace

Hi, my name is chasity and I was diagnosed with polyostotic fibrous dysplasia. It is a rare bone disorder. Been to specialist and about to go to a new one. Most people know my situation and know that it is costing me so much. I do work and have insurance but it doesn't pay for a lot. I have to have a brace for my foot/leg and I have now 3 weeks to come up with the money. After insurance it is 456.14 and there is no way I can come up with that in 3 weeks. It's to help me from falling. My leg and ankle gives out on me and I fall a lot. I need this brace so I can keep working. I am not wanting to go on disability yet. I want to work as long as I can. So anything would help and most people will tell u I don't ask for help and if I do I really need it. This hurts me to ask for this but I don't have any other options. Thank you for reading this even if u can't help. I know times are so hard right now on everyone.