How do I retain my secondary MOS?

When I reclassed from 12B back to 91B (now 68W), all that was needed was MOS Orders written to revoke 12B as Primary making it my Secondary and new MOS Orders giving me Medic as my Primary.

I carried three AFSC’s on my records.

To retain your secondary MOS as a former 68V, you’ll need to ensure that your certification and qualifications are up-to-date and comply with the requirements set by your branch and the Army's MOS retention policies. Since your license and certification are current with the National Board for Respiratory Care (NBRC) and the Texas Medical Board (TMB), it's important to consult with your unit’s Career Counselor or your Personnel Office to confirm any additional steps, such as maintaining specific training or documentation, that are required to keep your secondary MOS active. You may also need to complete any recertification or skill-level training as necessary based on Army guidelines.