No, that would change the experiment into "Which slit does the object pass through?", instead of the current experiment "How does a beam of objects manipulate t

No, that would change the experiment into "Which slit does the object pass through?", instead of the current experiment "How does a beam of objects manipulate the wall behind these slits?" Observing the object in either one of the slits would remove the necessary precondition for getting the interference pattern on the wall, so the pattern would no longer be there in your experiment.