Unless I'm mistaken, you don't HAVE to use Dream World so just keep Hihidaruma out of there to keep Encourage/Brute Force ability.
But if you can't avoid that ability and want to keep the physical moves then you need Rest, Sleep Talk and two physical moves like Earthquake and Flare Blitz. When you get below 50% HP use Rest to switch back to normal form and Sleep Talk so you can continue fighting.