When stakeholders express concerns about the volume of communication, it's important to review and adjust the communication plan to ensure it meets the project's needs and stakeholders' preferences. A RACI matrix is useful for defining roles and responsibilities but does not address communication frequency or methods directly. Escalating the issue may not be necessary if it can be resolved by revising the plan. Informing the CCB (Change Control Board) to stop communication is not advisable as the CCB's role is to oversee changes, not to manage day-to-day communications. Reference = The CompTIA Project+ Certification Study Guide provides detailed information on managing the project life cycle, establishing communication plans, and handling stakeholder concerns1.