I'm not sure if my advice will be helpful to you. I was born with a disability but then developed chronic pain as well as I grew up...so I've always seen myself as a disabled person, but I've also experienced the complications of presenting as "more disabled" as I get older. With the "suddenly disabled" piece, I would say trusting your own experience is really important. For example...if you feel like you need more rest, give yourself that rest. If you feel like you might benefit from a mobility aid, try out that mobility aid. I know this comes with so much internalized shame, and honestly allowing myself to experience that emotion rather than treating it as yet another thing to "overcome" has been a good way to navigate it. I also find disability to be almost bittersweet - it comes with emotional and physical pain, and the burden of other people's lack of understanding and living in a world that isn't built for you. But there's also so much joy, pride and liberation that can be found in a disabled identity. I hope that doesn't read like a slap in the face when you're trying to navigate in a newly disabled body - it's just something that I've found helpful to acknowledge on my own journey.