I’ve never been able to apply for disability… as it requires far too many appointments and submitted papers. One of those, if I’m well enough to apply? I’m well enough not to need it. But I tend to flip really hard and fast from high functioning to non-functioning. Unless I have a lawyer on retainer, to contract with a disability attorney for me? I can’t even manage to apply by proxy. So my knowledge is purely 2nd hand from being around people who are applying.
In the US (different rules in CA, AU, & UK) most disability applications are rejected, out of hand, and have to be appealed… so most disability attorneys won’t even take your case -unless you have money to burn- if you haven’t applied & been rejected, yet. But those attorneys can ALSO, for a nominal fee (nominal in legal-land is still a few hundred dollars min), walk you through the paperwork so that their appeal is easier/faster. As well as give you timelines for your local area (some are 2+ years, some are within weeks), budgets, and refer you to the best doctors, caseworkers, etc.
I really cannot underline how helpful/useful having an attorney is when dealing with govt. organisations. Especially understaffed, overloaded, underfunded, NEXT! type orgs like Disability.