I haven’t flown it since T2 re-opened but honestly in the last 3 years, I’ve never had an RDU - JFK flight go into T2. They always have gone into the last 10 gates in T4.
That said, it’s still doable with T2 though just definitely need to hustle to the JITNEY and make sure to check your departure gate to see if it makes more sense to go to the Gate 54 drop off or the Gate 20 drop off