This is false.
The major organs of the baby form during gestation, in the mother's belly. In cases of preterm infants, some organs such as the lung may not be fully developed. In these cases, the baby is hospitalized under intensive care until development is complete.
Several changes occur in the first weeks after birth, such as the development of vision, muscle control, the closure of the head, among others. However, it is wrong to say that the organs are still forming in the weeks after birth. The main organs are vital and are born ready in the baby.
