It looks fine, it's good that he's being kept
hydrated...Only worry if his poop is consistently runny for a few days, or it suddenly smells horrible.
I currently have a 10 month old rescue and a 3 month old baby who both drink from their bowls every day! My 9 month old girl, who I've had the longest (since she was 4 weeks old) hasn't ever once had a drink out of a bowl, a
bath, never. But she drinks every time I mist her, she licks it off her nose, the rocks, the leaves, everything...I've misted her daily since I got her, and I mist the other 2 daily as well, which seems to prompt them both to drink from their bowls. So I mist daily, never had any problems, and they are all well
hydrated, so I figure if it's not broke, don't fix it...