Well, yes and no. No in that you don't have to figure it out on your own. A good disabilities department will have a list of possible accomodations and you'll be able to choose which ones you need.....and your psychiatrist will then need to sign off on why you need a given accomodation. Once you have the list of possible accomodations, its not really all that difficult to determine which ones you *may* need. I say *may* need as its better to request an accomodation and not need it than to think you can do without, not request it and later need it.

Good luck!