Obtain prompt professional review because the actual matter may have relevant deadlines. Provide all available records and identify missing documents rather than guessing at the procedure.
Use the actual decision and dates
Have options, timing and current work or stay implications assessed individually. Do not assume that urgency makes a particular next step appropriate or that changing the proposed start date resolves the prior issue.
Waiting until the last year risks losing the seven-year limit. Begin gathering identity documents, organizational records, and employer confirmations immediately, since these preparatory steps do not depend on the missing written record and needlessly waiting on them wastes available time. Outline the factual chronology in writing while memories and internal records are still fresh, even if part of that chronology cannot yet be confirmed against the outstanding document. Identify precisely which specific facts genuinely depend on the missing record and hold only those open, rather than treating the entire preparation as paused simply because one piece of the record has not yet arrived. Ask whoever is expected to produce the record for a realistic sense of when it will be available, so the remaining preparation can be sequenced around that estimate rather than around guesswork. Keep the prepared materials organized and ready, so the case can move forward quickly once the outstanding piece is finally in hand, instead of scrambling to assemble everything else at the last moment.