We offer an every-other-month and quarterly option. WA Members just need to log in to their WA Account and from there they can change their delivery frequency (as well as change other membership preferences).
If you're uncertain whether monthly shipments will be too much for you, you can always give it a try and skip just a month at a time, or delay your shipments until you're ready. Again, just log in to your account and you'll find these options in your account settings.
Note to prospective members: since we are set up as a monthly subscription, you must first sign up for a monthly membership, after which you can change your delivery frequency any time through the WA Account portal.