It seems having The Conversation Project as a first document to use (and let them reflect on and then go over it with them after they've had time to consider the questions) would be reasonable. Then working on the Five Wishes with more details about options for life sustaining care or organ donation.
Doing a second meeting online etc to cover other concerns and personal and social issues and then a final time to plan 'funeral type' information (vigils, The Parlor info and actual documentary or another online resource).
End of Life Doulas are hoping to go over everything related to What One