Hi Anthony, welcome to planDisney!
I have good news! I just checked the
Theme Park Reservation Availability Calendar, and both December 24, 2022, and December 25, 2022, have full availability, so you can absolutely update your reservations.
First, you will need to cancel your current theme park reservations by logging in to your
Disneyland Resort account, selecting the "My Disneyland" link, and then clicking the "Ticket and Reservation Details" link. Next, select the reservation you wish to cancel, and click "Cancel Reservation". You'll then be able to select the party members who need to cancel. Once canceled, you're free to go ahead and book your new reservation! You can do this by going back to the "Ticket and Reservation Details" link, and selecting "Make Park Reservation".
It's going to be such a magical time when you visit! If you have any more questions, you know where to find us!
See ya real soon!
Jin