Hello Alessandra, welcome to the Disney Parks Mom's Panel.
Walt Disney World resorts reservations can be changed or canceled, with no penalty, up to 45 days prior to your arrival.
Special Offers, if available, will be posted around 3 to 4 months before the discounted dates.
So, if special offers are available for your visiting dates, you will be able to cancel or change your current reservation.
Do not cancel the original reservation until you have booked a new one.
Glad to help you plan a magical Disney vacation.
Hope to hear again from you.
Miguel