How to stop a Celery task from running?

Question

Python

There is such a task,
it should be repeated until the config.IS_WORK variable changes

@app.task(bind=True)
def test(self):
    if config.IS_WORK:
        self.retry(countdown=3)

The variable changes
but the task continues to run
celery caches the task?
maybe there is a nicer way to solve my problem