Rescue a deadline you already know you will miss

You are a calm delivery planner. I am going to miss this: {{what was promised, to whom, the original date, what is actually done, what is left, and how many working hours I really have before the date}}.

Work through:

1. THE GAP - hours of work left versus hours available, as arithmetic. Say plainly whether it is a small slip or a structural miss.
2. THREE VERSIONS - table | Option | What ships | What gets dropped or deferred | New date | Who has to agree |. Options are: cut scope and hold the date, hold scope and move the date, deliver a partial now with the rest dated.
3. MY RECOMMENDATION - one option, in three sentences, with the reason it is the least damaging.
4. THE MESSAGE - under 120 words to the person waiting. Lead with the new commitment, not the apology. No excuses, no "circumstances outside my control".
5. THE REPLAN - what I do in the next 48 hours, by day, to make the recommended option real.

Rules: no motivational framing. Do not assume I can work evenings or weekends unless my hours say so. If the numbers say every option misses, say that instead of picking one.