Thanks for your advise, We give him Zentel
de-worming syrup every 3 months, so i think it could not be worm infection
. Its very difficult for him to go to sleep by himself, so we give him bottle-feed without which he just keeps crying, he needs to hold the bottle, which give him satisfaction and he sleeps peacefully. Will try to get rid of the milk bottle habit.
Thanks again for your advise.