You should start planning during your first DNP course. In DNP820/830 you need to begin the paperwork process for immersion. This involves securing a project site and preceptor. Some affiliation agreements (contracts), especially within large hospital systems and government organizations, may take 4 to 6 months to secure. It is best to plan in advance. If your workplace or preferred site involves a lengthy contract process, you may want to consider an alternative option. You will need a DNP Immersion Approval Letter (which is awarded by the Office of Field Experience after approving all immersion documents) to begin your first immersion course, DNP850A