Handouts for patients or family members are available through MedlinePlus.
At the bottom of the Palliative Care and Hospice care pages there are links to patient handouts.

Actual instructions will vary by patient, and specific sets of instructions might also be available through the Krames materials on EMR. You might try a keyword search for palliative in the Krames tool to see what it retrieves.

Nothing in CINAHL or PubMed searches really addressed what to cover in discharge instructions with patients going to palliative care or hospice.
Searched with combinations of these concepts: (Palliative care or hospice), (discharge instructions or patient education