Depends on your definition of pause.

For SEO, make sure your domain stays live and is on the search engines.

While you won’t lose anything from not being active (unless you have low-quality backlinks but they’d drop off regardless over time) but other people who are activitely doing SEO might overtake you or continue to become stronger.

As mentioned here, I’m sure you can put up some banner to check back at a certain date to place an order.