It can take a little bit to settle in. Beardies generally get their water intake from the food they eat. I offer mine a water bowl, but he hardly ever goes near it. Is he in a glass enclosure? If so cover the back and sides with something so he can only see out one side. What have you tried offering him food wise? Depending on what he has fed before, he may or may not take certain items. My beardie got a taste for dubias, and won't touch crickets anymore.