Stressed or something else?

Hi! I just got a 3 month old bearded dragon on Monday. He was super active and jumping around when we got him, not he's very laid back and lazy. He seems very alert, but when we hold him he falls asleep. We had an incident where he nearly drowned from a bath (I thought maybe it would help him de-stress), but we were able to open his mouth and all the water came out and he was back to normal soon after. He has stress marks on his belly and chin. He doesn't do much but sit on his basking rock(it came from his old home). He eats bugs (small superworms and crickets), but won't touch his veggies (kale, collard greens, squash, carrots). Is he just adjusting and is stressed? Or should we be worried about something else?
Basking spot is between 95-110 F and ambient temp is 80-85 F.

I am sure its location stress but the near drowning in the bath didnt help--- can you post pics of your tank and lighting so we can see the set up -- where did you get your little one from?
Karrie