> If you’re not on an ambulance, it’s very hard to fulfill the NREMT’s continuing education requirements, so your certificate will quickly expire.

I think in the past, CEs had to be done in person, but after COVID they started allowing 100% online CEs. IIRC, certification is good for 2 years, so if you renew at the end of your cert period, you can immediately knock out your CEs for the next renewal period, you'll be set for a whole 4 years, and you only have to pay for a month subscription to one of the CE providers.