Diagnosed with Celiac only in Navy 1 year

Background: I'm in CTI A school, graduating soon. A little over a year in the Navy. Just recently diagnosed with Celiac disease and referred for a PEB. I've had labs, seen several nutritionists and done an endoscopy as well. I do not eat in military facilities, I have BAS paperwork in the works and also have lactose intolerance.

I've heard many different things on how this process works and it seems I have a 50/50 chance of staying in but I have recently been told they could re-rate me as well. Can they do that?
Also wondering how this process works, will they put me on LIMDU? Just looking for some clarification.
 
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