How to run spiders sequentially (one after another) with a 2-minute interval in my task?

signals.py

@receiver(post_save, sender=ParseCategoryUrl)
def start_parse_from_category_url(sender, created, instance, **kwargs):
    """
    The start_parse_from_category_url function is a signal receiver that
    runs the run_spider_to_pars_ads_list task
    when an instance of CategoryUrl model is created.
    """
    if instance.url:
        group(
            run_spider_to_pars_ads_list.s(url=instance.url, user=instance.user.id),
        ).apply_async()

tasks.py

@app.task(name="run_spider_to_pars_ads_list")
def run_spider_to_pars_ads_list(
    url: str, user: int, pages: Optional[int] = None
) -> None:
    process.crawl(ListitemsSpider, url=url, user=user, pages=pages)
    d = process.join()
    d.addBoth(lambda _: reactor.stop())
    reactor.run()