This is my attempt to act as your concierge, because if someone you love is in cognitive decline,
1) you don’t have the time, energy, or inclination to become an Internet sleuth, and might prefer to have someone show you a few organizations that have done good work.
2) you (and the doctors) probably don’t know exactly which disease is at work, because definitive diagnoses can be elusive — except in autopsy, which can feel a bit late when you’re trying to tread water, and it helps if someone gives you a place to start.
3) you need to find humor and relief wherever you can.