When you say a few months. do you mean two or three or more like six? That will make a difference in what you will find available.
If I were you, I'd take a look at the menus on the DIS or on Allears.net. See what menus look good to you and start entering your dining choices soon. Anyone can start booking dining reservations 180 days out and if you are staying on site you can book 180 days out from the start of your trip plus ten addition days for that reservation.
Good luck.