A shelf inventory answers what you have. It does not automatically tell you what you have heard. A simple listening status can make that distinction useful without creating a completion race.
Use a few understandable states
Try unplayed, partly heard and heard through. Add a date only when it helps you remember the session. “Heard through” need not mean carefully studied, and a partly heard album is not a failed task.
Choose one inviting next listen
Select an unheard record because of a curiosity: an instrument, a sleeve note or a recommendation you want to revisit. Write that reason beside the entry. It gives the first session a starting point without prescribing what your opinion must become.
After listening, keep one observation and change the status if appropriate. Avoid inventing a precise listening date for older records merely to fill every field. The system should help you rediscover music you already own, not turn an enjoyable collection into an overdue assignment with a growing list of obligations.