Raguirmesh
The Birds eyes will change appearance over time. This should start at around 14 weeks. But there is no set time frame when these changes start. Just like people each bird will mature at a different rate.
The bird is just preening itself, this is done to help remove the outer sheath covering the feathers and also to clean it's feathers. This is normal behaviour. Because the bird is growing up, a light shower or a bath helps with the feathers, cleans the plumage and skin.
The bird is sleeping in a normal position for a baby bird.