You can pause your subscription at any time on your subscriptions tab. You can pause for a few days (too much coffee) or even for months at a time (while you travel the world!).
To do so, click 'pause your subscription'. In the popup select the date and reason for your pause. In this example, my next coffee would ship on February 20th, 2017.
Is your coffee already on hold but you want to change the start date? Go to your Subscription page and select the 'Resume your Subscription' link. Then select pause and choose your new start date.