A changed deadline should trigger a deliberate scope decision. Confirm the audience and the decision the summary must support, then rank sources and checks by importance. Preserve the essentials: accurate citations, publication dates, clear assumptions, and a review of any claim that could materially change the conclusion.
If the deadline moves earlier, shorten breadth before sacrificing verification. A focused summary with three reliable sources is better than a broad one with untested assertions. If time expands, use it to check conflicting evidence and update stale material. Tell the reader what was not covered and when a fuller version can follow. Record the new owner and review time so the document does not drift.
Akousa