If stakeholders doubt the feasibility of a project schedule, I tend to explain to them why each step of the project takes the time it does. Usually, if you give valid arguments and explain why something is happening, the other side is more likely to understand the information presented.

I would begin by presenting a detailed plan that outlines all activities with clearly established milestones and assigned resources. Engage stakeholders early by seeking their input and approval, cultivating a sense of ownership and reducing potential opposition. Maintain transparent communication by providing regular updates and utilizing visual aids eg. progress updates by % in a dashboard to clearly convey the schedule. Always incorporate buffers to account for potential delays. Finally, emphasize how the project aligns with the organization’s strategic goals and communicate the value it brings, reinforcing its importance and securing stakeholder buy-in.