We found that it's easier to say how you actually feel if you address the second part: "Incapacitated by cognitive dysfunction, but stable" or "anxious and emotionally raw, but manageable".
Which opens up to talk about it, just understand/share in it, as well as sneaks in an opening to express needs/wants/wishes (e.g. "manageable, but I would appreciate some extra encouragement" or "so I might drain faster and need to step out at times").
But we do, bestie, we're here for you. Even if we don't know how to help, we're here and we love you.