Hi Sarai, welcome to planDisney!
I have good news! You can reschedule your reservations as many times as you want, as long as your
theme park tickets are not expired! To check your ticket's expiration date, hop into your
Disneyland Mobile App, click the three horizontal lines in the bottom right-hand corner and select "Tickets and Passes". You should see your tickets along with their expiration dates.
In the worst-case scenario that your tickets happen to expire, not to worry, you still have options. Per
Disney's eTicket Terms & Conditions, any wholly unused, expired Disneyland Resort theme park tickets (except for special event tickets or tickets purchased from a third party), can be applied towards the purchase of a new theme park ticket in equal or greater value to what was paid for the original ticket! Woohoo!
Hope this helped, and if you have any more questions, visit us again!
See ya real soon!
Jin