Physical Evaluation Board Forum

I have been on limited duty for nearly a year now and Im about to be placed on a PEB. My problem is right before the end of my first period of limited duty i was sent to an advanced school despite my protests that i might not be able to finish my obligated service requirements. now i read in the manual that you can be kept on permanent limited duty to fulfill those requirements or to finish a tour of duty. i'm just trying to find out the likelihood of that and if there is anything i can do to make sure it doesn't happen. i love the corps but stayin in in my present condition would be hell. the only reason i was sent to this school is the orders were available after i couldnt take my orders to D.I. school