First of all you have to make your child’s room comfortable so that he’ll love to stay in his own room. Choice of room environment is totally depends upon the child, some toddlers love to sleep in room with white noise while some love to stay in quiet and dark environment.
Make your toddler feel strong by creating clear expectations. Talk to him and say that you have to sleep alone on your bed. Don’t leave him alone from the start, stay with him until he fall asleep then you can leave the room. Once the toddler grows little bit then you can leave the room even from the start.
Give him a warm bath before going to sleep and cuddling will also help him to fall asleep. Follow these steps and with the passage of time your toddler will start to sleep on his bed alone.