Handling an unexpected budget cut requires strategic steps that can be taken by an experienced project manager in order to minimize the blow on the core objectives of the project.
Here is how I would do it:
Assess the Situation: I would start by determining the full extent of the budget cut and its implications on the project's current status, including remaining resources, timeline, and key deliverables.
Prioritize Deliverables: I would identify the most critical deliverables that are vital to the project's success and ensure those are prioritized. This involves working with the team and stakeholders to clarify the most valuable outcomes and focusing resources on those aspects.
Revisit Scope: I will determine whether adjustments or changes can be made to scope. If need be, I will negotiate with stakeholders and redefine scope in such a way that the most critical deliverables will be kept while all non-essential tasks are stripped off because they may not be feasible anymore.
Optimize Resource Utilization: I would search for ways to optimize existing resources. This would be through schedules adjustments, changing team members to be used efficiently, or use cost-effective tools or solutions, for example. It could even involve reducing overhead or eliminating unnecessary expenses.
Communicate Effectively: Communication with the stakeholders, team, and clients is quite key in the entire process. I would have to set up expectations, explain changes, and describe how the revised plan still would achieve core project objectives.