Agree with the above. A candidate CANNOT initiate a waiver.
DoDMERB is a centralized organization based at the USAFA, but serves all the Academies and ROTC programs.
DoDMERB only determines Q or DQ. The waiver process is de-centralized to the Academy or ROTC program.
A "remedial" is information needed to Q or DQ.
Waivers are done by each program and only can begin if the candidate is DQ'd. The program can request additional medical information (AMI) to determine if a waiver should be granted or not. One academy can grant a waiver while another might not. Whereas a DoDMERB Qualification applies to all the academies and programs across the board.
These two flow charts should explain things better:
Initial exam - Q or DQ (by DoDMERB)
https://dodmerb.tricare.osd.mil/Content/InitExamRemedEvalProc.pdf
Waiver Process; (by the Academy or ROTC program)
https://dodmerb.tricare.osd.mil/Content/MedicalWaiverConsideration.pdf
Source: DoDMERB