I think you’ve had pretty good advice from everyone here and I can’t really add much.

I just want to say that what some people class as low stress (routine mundane) jobs aren’t necessarily low stress for everyone, it would depend on the person.

Actually I personally find cashier work stressful, that’s why I work shop floor. That has stresses too of course, but they are stresses I can cope with.

And I personally would hate my shifts changing too, that would stress me - hands up, we’re not all flexible and versatile, but it doesn’t mean there’s not something better out there for you. I believe there is something more suitable for you where you won’t feel like you’re screwing up because you’re stressed out.

I agree with others about your social worker, I’m not getting vibes they are looking at what’s best for you here. Hugs.