Would it be worth trying to reclass to 68P if I’m already certified on the civilian side?

Looking at the January 2025 Cut Off scores, the 2 MOSs are almost comparable. 68P will almost get you out of the motorpool entirely. You'd always be assigned to some sort of hospital or clinic.

I'm also a believer in that if you're already certified, may as well do the job you paid to train in.

The question is whether you want to do the job or not. Nobody can answer that but you. It would greatly change your surroundings considering you would go from the motor pool to a hospital. I'd also field some questions to the powers that be that would give you a timeline and expectation on what your experience will be transitioning considering you have the certification.