Bye...

The bye as in prononciation and action is perfect.

Physical prowess...

Now he is able to climb all by himself. I have observed that if he does he rides alone in the middle of the stair, he takes one step at a time, places both his foot and then proceeds to the later. However, if there is a banister to which he has access or there is someone who holds his hand, he manages to ride the stairs like any adult by using one leg for a step.

New phrases on telephone

There are some parrot statements which he makes once anyone calls on the landline. Without asking or listening to the person who has called, he would rattle off: "Bapa Office", "Bhai School" and preceeded by "Nama Nama" apparently referring to Namaskar as is mentioned by his elder brother as is addressed by his brother.
Hope he learns only the good things from his elder brother and Sambhab also teaches him the good qualities.