Off and on they've been threatening me with a PIP for the past year, but haven't actually triggered one. I did talk to a lawyer. They said there's not much I can do until they terminate me, or risk losing the job. They could help me respond to a PIP when they PIP me. But even if the company terminates me, the lawyer said they are inclined to negotiate higher severance than going to court because it's tricky to prove that any bias or singled out treatment was because of the disability and not something else. Although I do have notes of my manager saying requesting accommodations might have hurt me and that my department head is targeting me for some reason.