There can take one of these two roots to take a break.

i) Simply hit on “Save and Exit” button in Home Tab, which will save all your work then exits out of the deck editor. You can even sign out if required and login again(even from another machine/location) and continue on your deck by editing it.

ii) Download the deck on your computer and upload it again(you can even upload it another course), and continue on your deck by editing it.