So, my view is that you won’t be able to turn it back on. The recent notification relating to annual dues payments says:
Pay Dues Via Auto-Pay
Disney Vacation Club offers 2 options for Auto-Pay: a yearly payment on January 15 with a credit card or monthly payments with a US bank account. By registering for Dues Auto-Pay, you can enjoy the magic of Membership without the worry of missing a payment.
The annual deadline to register for Auto-Pay is January 15. If your account is actively enrolled in Auto-Pay, please review your payment information for accuracy.
Note the deadline, so if you turn it off after Jan 15 you can not re-enroll. So full payment will be due if you turn it off.
Also, the link to the auto-enrolment / dues payment terms and conditions is here:
https://disneyvacationclub.disney.go.com/home/dues/dues-payment/terms-and-conditions