my baby always prefers to sleep on his left side..also heb feeds on size lying position in the night from left side only due to which hua head has flattened a bit from left side..he is almost 4 months old now..can his head shape be corrected. if yes how?? he has no problem in turning his neck to the other side.. he is ok when he is awake.. whenever i try to make him sleep on right side he doesn't feeds and cry