Infants communicate with you via significant body language, facial emotions, and a variety of vocal sounds.
Language will ultimately emerge from these motions and sounds.
The failure to comprehend your babies is most definitely not due to a lack of effort on your part, nor is it due to the newborns' abandonment of their efforts to communicate.
Infants have an innate need to communicate with you, just like you do.
Infants are endowed with a prodigious amount of intellect.
Additionally, they found that a caregiver's refusal to respond socially to an infant's efforts to speak is one of the most disruptive factors in the infant's learning process.
Between birth and the time when your babies say their first recognized words, there may be a period of misunderstanding or communication that is less than exact.
This need not be the case.
These first months may be very fruitful in terms of meaningful and successful infant/parent connection.
Manual communication with your babies may significantly aid in the bonding process by laying a strong basis for mutual understanding.