Hi Lindsey!
Thanks for your question and for visiting the Disney parks Moms Panel!
Great minds think alike....I will be there the same week celebrating my baby's Sweet 16!! Booking
Advance Dining Reservations (ADRs) can be done 180 days prior to your arrival. I am in the same boat waiting to do just that. Right now, it looks like you should be able to book starting on Monday, April 8.
Also, Disney resort hotel guests can book their
FastPass+ reservations 60 days in advance of their arrival. So, it appears you are going to be able to reserve your FastPasses on Tuesday, August 6.
So, you have a little bit more time but it's definitely getting closer.
I hope this helps and I wish you a Magical trip!!
Chris