My baby has difficulty sleeping every night. He would cry and whine till he is tired and yet he sometimes has night terror. Is there an easier way to get him to sleep? I've tried rocking him using a baby carrier while singing but it doesn't work all the time

Rocking your baby to sleep is considered a sleep prop and when you are using a sleep prop it means your baby needs your help to fall asleep and stay asleep. Ideally you should teach your baby the art of self settling so that he can fall asleep on his own and that way he will be able to sleep longer too. Hope that helps!