Fuel Filter Question

[Otelotiat]

The old Dodge is turning 5 years old next month and the O.D. just rolled over 12.5k miles. I'm wondering about the life span of the fuel filter. I know you are to change them out every 15k, but I'm still using the original filter. Should I change out the 5 yr. old filter or is it not a problem to wait for another 2500 miles.
Also, any good air filters https://bestarny.com/air-filters-for-6-7-cummins/ out there for the 6.7 Cummins or should I stick with the OE filter. On my last Ford Diesel, I was told thatr the Ford filters were the way to go.