No more easy way to rank up at 196 is there? At this point i can either dokkan awaken either SV or PHY ssj gotenks, but not both unless i remove LR gohan from the team.
Grind a stage like 21-1 during 3x/4x exp events, and always be sure to do the Bee Pan event on sundays (the 80 stamina z-hard gives 200k+ exp). Otherwise, I don't think there's a way to grind rank specifically once you get above rank 200.