If you need to make sure you don't receive any Butternut deliveries for a while, this is easy to do. You have two options here:
1) Delay your next delivery ahead by a week or two, or to a specific date in the future from within your online account.
To do this, log into your account - you'll see a section showing your Upcoming Deliveries. Here, you can simply push back your next box by a week or two by clicking 'Delay Delivery', and on this next page using the 'Push My Delivery' button.
You can also move an upcoming delivery to a specific date by clicking 'Change delivery date' in the delivery list.
2) Stop your subscription and restart it at a later date.
To put your deliveries on hold to restart at a later date, you simply need to log into your account and then click on the 'My Plan' section at the top of your dashboard. From here, you can then scroll down to the 'Stop My Deliveries' button, and restart everything when you're ready.