I am possibly misunderstanding, is there other savings like an emergency fund or main checking account besides the $1000 you currently have in savings?
If not, I would not be going or planning a Disney trip. The tickets and gift cards you can defer to a future time, but the timeshare thing is really tough. I have not booked one of these before, but is there any possibility to try to rent the week to someone else? That is really hard if you have to eat the $1000 for the room. That part of me almost thinks "Just go, you lose the thousand either way", but you'll be piling gas costs, wear and tear on your vehicle (more miles means oil change, tire rotations etc all come sooner) and additional food costs in order to not eat the $1000. That is a rock and a hard place.
How about raising funds in order to cover those added costs? I am always trying to find ways to make extra cash here and there so I have years of experience in selling things on eBay, Craigslist and Facebook Marketplace. Is there anything in your home that you don't use or need anymore that is still of value? If you start now and list a couple things on Marketplace, even if it's $10 here and there, you could potentially earn a few hundred dollars between now and May and cover your gas expenses, that would take a little of the hit off. That is how I try to fund the food portions of all of our vacations.
You may already have an emergency fund in place so I could just be talking out of my butt here, but if you don't, that would be my #1 priority before thinking about vacations after this point.
I hope you're able to figure out best case scenario. If you do go, commit and try to enjoy yourself. If you don't, don't get discouraged, maybe make a date target goal (like, "We want to be able to go to Disney by May 2025"), that can be a real motivating factor in helping you plan everything financially and gives you something to look forward to.