The Wizards returned to Washington after a difficult road trip but were greeted to a welcome sight: Nene moving around without crutches. Four weeks into his recovery from a sprained medial collateral ligament in his left knee, Nene is making progress and continues to target an early-April return, according to a person with knowledge of the situation. Coach Randy Wittman said Nene is increasing his workload and is currently running on the anti-gravity treadmill. “He’s doing good. He’s progressing well,” Wittman said. “He’s moving in the right direction. It’s four weeks. No setbacks, everything is moving good. We’re encouraged with that.” If the knee continues to heal and regain strength, a person close to Nene said that the Brazilian big man could actually begin practicing some time next week. “That’s the game plan,” the person said. Wearing shorts and a T-shirt, Nene made his way from the Wizards’ locker room to the weight room on Tuesday afternoon without any noticeable limp after his teammates completed practice in preparation with the Phoenix Suns.