My second baby 50 days old is falling asleep while feeding within 5 to 10 mins and waking again after every 1 to 1.5 hour for feeding..is it normal..how to make him get feed for 20 mins continuously

A. If the babies able to fall asleep spontaneously that it means that the baby is content with the milk. There is a chance that you might be producing more milk or the capacity of the child is less and there is no compulsion that the baby should feed for 20 minutes at a stretch.