To prevent neglect of client matters in the event of a sole

practitioner’s death or disability, the duty of diligence may require that each sole practitioner prepare a plan, in conformity with applicable rules, that designates another competent lawyer to review client files, notify each client of the lawyer’s death or disability, and determine whether there is a need for immediate protective action. Cf. Alaska Bar Rule 31 (concerning appointment of trustee counsel to protect a client’s interest).