Love the day the Mickey Mail comes. Last time for us it came 28 days out. Even though wed been planning for months, when that packet came, it was one of those moments for me that was like, Okay, we are really going.
Try not to worry. Prioritize what is left to do so that you do what you absolutely have to before the trip and have what you absolutely have to have for the trip: stuff you cant replace there like any prescription meds, then stuff you can replace there, but you know in your mind you wont want to spend what they will charge, then go from there.
It gets easier. I now have a box of stuff I can go to for our next trip instead of doing lots of shopping and other stuff to prepare.
And dont forget your Mickey Mail when you leave. I did that last trip. We still survived though. I had to stop at the Magical Express desk and get us hand written vouchers to board the bus, but we survived fine.