A baby has already developed quite a bit in the first six months, especially the brain! In the next six months, you will see that other things develop in other brain areas. And the nice thing is that you can also see them reflected in the leaps he/she is making now!
If you look at the parts of the brain where things are developing, you will see that these are completely different parts from those right after birth. That alone reveals how much your baby has already developed during the first half year of life. The parts of the brain that play a role in cognitive learning, movement, language, and social-emotional perceptions are now very active. Of course, that does not mean that the other parts of the brain are not active now. Brains are always active.
If you dive into the leaps your baby goes through during these months, you’ll see that they all have to do with the parts of the brain that are most developing right now.