Hello Lorraine! It is never too soon to start planning your Walt Disney World Resort vacation! In fact, with your planned April 2021 visit, you are actually within the window to officially book a reservation!
Room-only reservations for the Walt Disney World Resort can be made 499-days in advance! You can book this far in advance by calling (407)939-1936. Again, this is for a room-only reservation and it must be booked over the phone. You would not be able to book other parts of a Disney vacation package such as park tickets or the Disney Dining Plan.
If you have a Disney Resort Hotel that you truly love, then I recommend booking a room-only reservation. You can then modify your reservation later with items such as park tickets or the
Disney Dining Plan. I typically modify my reservation after
special offers are released on the Walt Disney World Resort website. While there is never a guarantee that the special offer will be available at your resort of choice, the Disney Cast Member that you speak with will make every attempt to accommodate your request!
Lorraine, I hope this information has been helpful! You have so much time to plan! Please come back to visit the Disney Parks Moms Panel if you have any other questions!
Hakuna Matata! Jonathan G.