Answer:
I'm sorry that I'm not a veterinarian or anything close. but it sounds like your parrot is going through either dehydration and/or exhaustion. the vets probably just gonna take care of him or give you instructions dont be too worried.
Step-by-step explanation:
the parrot seems to have been getting these problems aftee you didnt give him any water and he probably didn't have enough energy so now its probably just tired and might need some nutrients.