my baby is late preterm 35+5 weeks..when he was 56 days old..he fell down from my Lap to floor.he was cried lot and when I given milk he drunk and no vomiting or no head injury signs noticed....from birth it self he is sleeping more time ..very difficult to wake and give milk..now he is playing but only for 30 _ 1 hour only...smiling but not maintaining eye contact and not looking face to face ...is there any problem..