I give my plants a "rest," say 6-8 hours of darkness, but only about 2-3x/week, about every other day.
Maybe those more knowledgable about this can comment on what the downsides, if any, may be from doing this -- Giving rest periods bu not following a regular 24 hour daily pattern of 'rest' with no light. Particularly with autos, descendants of (sub)arctic strains adapted to non-stop light, I presume the plant doesn't need to follow a 24 hour/diurnal light cycle schedule (at worst getting no benefit from no-light rest times), much as the plants do well with non-stop 24-hour light.