I know there's an association between changes in urine output and medical conditions like diabetes. But I think you'd see changes in food consumption and weight too.
Are you sure all the wetness is urine? Could he be having "boy time" in there that would account for a certain amount of wetness?
Another thought is that if he's not out playing as much as usual with you (which is when mine takes advantage of a good time to go), he's altered when and where he goes? Mine will go pee once or twice if she's been out a long time. There's just something about increased activity and increased potty episodes.
Are you sure all the wetness is urine? Could he be having "boy time" in there that would account for a certain amount of wetness?
Another thought is that if he's not out playing as much as usual with you (which is when mine takes advantage of a good time to go), he's altered when and where he goes? Mine will go pee once or twice if she's been out a long time. There's just something about increased activity and increased potty episodes.