Do you still care / Is the outcome still needed?
It’s probably been a week since you last did a review, depending on the frequency of review you’ve set for this project – possibly much more. Have your priorities changed? Is this project important any more? No? Kill it. There are enough genuinely important tasks for you to attend to without adding more. Lose the guilt. drop the task.
Miles Cheverton has a list of very simple yet powerful questions you should ask yourself during your Weekly Review. I do not ask them often enough, particular the quoted one.