Dress anxiety

So I found my dress back in March at a local dress shop in my hometown. I am a bit worried at the moment because it is discontinued so I had to buy it as is. It's about four times my size (it's an 8 and I'm between a 0 and 2) so it needs a lot of alterations and some fixing up with beading and some seams due to being tried on so many times. Also I am only 5'0 so I'm hoping it can get hemmed to make me look like a real bride. I always thought I'd want a Cinderella look but every poofy dress I tried on just made me feel like a little girl. My anxiety has been through the roof hoping we can get it to fit properly and have everything corrected within this next year. Hoping someone has had a similar experience with a great end result that will calm my nerves😅 I could use any positive words to ease my anxiety!