When as young as 18 weeks old, Dr. Patricia Kuhl found that babies can listen to “ah” and “ee” vowel sounds and gaze at the correct, corresponding lip shape on a video monitor.
Around age 2-3 months, infants start coping and making soft vowel sounds. They are able to do this because their larynxes and other parts of their throats change to allow these sounds.
By age 3-4 months, babies begin to make consonant sounds of b, k, m, g, and p.
By 4-5 months, the vowels and consonants are put together to form nonsense words.
Check out eibalance.com for more info about this. Hope it helped!
Not no more they used to be hella addicted to it tho