When vendors are behind and not communicating, the first step is to increase monitoring and obtain reliable status so the project manager can manage recovery. Daily check-ins (A) are an appropriate short-term control to improve visibility, remove blockers, confirm realistic commitments, and track progress against an agreed recovery plan. This aligns with procurement and stakeholder engagement objectives: establish clear communication cadence and accountability. Immediately extending the schedule (B) is premature and may be unnecessary if recovery actions can bring work back on track; it also weakens urgency. Replacing vendors (C) may not be feasible near a deadline due to onboarding time, contract constraints, and integration risk; it's typically a later escalation if performance does not improve. Reducing pay (D) is contractual and legal territory; penalties must follow contract terms and are not the first response to a communication problem.
Tightened governance and frequent coordination is the most practical first action to protect a near-term deadline.