U can try the following:
1. Set up the room with dim light
2. Turn on the sleeping music
3. Use some warm water and a towel to clean up the baby
4. Body massage
5. Speak softly with the baby telling him it's time to sleep
Slowly in a week, he will realize it's time to sleep...like a rountine.
Agree with this mummy.
I stop all activities at least 15 mins before he goes to bed. When I do the body massage for him, I'll tell him it's time for bed...talk to him softly. Even if he tries to say "un-gu" and play with me, I'll said, "Darling, it's time to go to bed!" And remember u have to do it almost the same time every night. For example, if u want him to go to bed at 9:30pm, u have to do it at that time everynight. Slowly, he will remember, when u said this...it's time for bed.