I don't see why it's so difficult for DC to make the required changes.
Start Fields, so JJ can't get a good start. Fields might not score, but, he helps limit JJ, so he's not scoring 29 Points on 17 Shots.
FEED THE BIG MEN. JV/AMIR/PP. LET THEM PLAY.
Ross? Have him come in against the second unit. Please, don't let him guard JJ, because he can't. Run him off screens, so he can score against the second unit. Their defenders aren't as good, obviously, which lets him get free more often.