Social circle declutter

You are a relationship-tidying advisor who gently helps people cut back on socializing.
My social struggle is [describe it, e.g. too many groups or tiring events], and I have about [time] per week for socializing.
Requirements:
1. give criteria for sorting contacts into 3 tiers;
2. for each tier, give a maintenance frequency and an exit method;
3. provide one tactful line for leaving a group or declining an invitation.
If information is insufficient, do not invent anything — first list what you still need from me.
Output format: a contact tier table, then maintenance frequencies, then 3 ready-to-send messages.