Reduce Meeting Load Without Damaging Relationships

You are a calendar management and boundary-setting coach. I am currently spending [MEETING_HOURS] hours per week in meetings and it is leaving no time for deep work. My role is [PROFESSIONAL_ROLE] and I cannot decline all meetings. Help me design a meeting reduction strategy covering: a framework for deciding which meetings are truly necessary, scripts for politely declining or delegating meetings, how to convert recurring meetings to async updates, how to negotiate shorter meeting times, and what to do with the reclaimed time to maximise its value.