Interaction
After all the recent changes you have experienced through last few months, you have finally come to a point of getting more interactions. Babies start to interact, smile and have a conversation with you more and more (in their own way). From around 2-3 months when they surprisingly smile once they see you when your face is close-by, to an exciting stage around 5 months when the smile gets bigger and more often. That is when you see smiles and laughs every time you interact with your little one!
(The fun has just begun! a lovely reward to all your hard work!)
At this stage, babies interact much more with the strangers and everyone loves to talk to them and so do they!
Yes of course this interactions stays and grows to the later stages of their life, so why 6-7 months-old? And not later
This brings us to the next reason: