PMP Practice: Appraise stakeholder skills

Birch Petersen is managing a hybrid project at Cheerful Entropy Labs to develop a new customer analytics platform. The team has been using both iterative sprints for the software components and predictive planning for the infrastructure deployment. Three experienced developers will be rolling off the project in two weeks to join a new strategic initiative, and their replacements have already been identified. The outgoing developers possess critical knowledge about the custom API integrations and the database architecture decisions made early in the project. The team is currently in the middle of a sprint with two weeks remaining. What should Kenji do?