Water bottle? you mean like a sipper bottle used for rodents and other small mammals to drink water? I hope you kept the receipt as that is useless for a bearded dragon or any other lizard.
Bearded dragons don't always drink from standing water as it is. However some will learn to drink from a shadow water bowl or dish. Some will only drink if you mist water on the side of the cages or rocks. As your dragon is willing to lick water misted onto a rock, try doing it to a water dish (just put the empty dish in the cage then mist it). This will get your dragon used to using that dish for water, and he may learn to take water left in the dish with out misting.
For the most part dragons gain the water they need from the food they eat. Thus its always good to feed well hydrated and gut loaded crickets and soft bodied worms like silkworms, hornworms (small to medium sized depending on how big your dragon is now), butter worms and phoenix works.
When offering greens, misting the greens to ensure they are plenty damp, also helps ensure your dragon gets plenty of water.
-----
PHLdyPayne