A. -- a simple way to do this is to fill the bottle with water at bedtime. What they are seeking is to suckle -- which is a comfort mechanism common to most young children (thus the pacifiers use) After a few nights, no milk, they suckle less and less and finally not at all --
Also, offer other things, rocking, telling a story (even if he is very young, he is listening to your voice and is comforted and feels secure) Sing to him -- when he is really relaxed and you feel that in his litle body, see him looking drowsy, put him in his bed (still talking to him softly), rub h is back genlty -- and he will probably fall asleep with less and less of this after awhile, and you can then just put him to bed at a certain time with a little hugging and loving.
It worked with my first one -- my second one was happiest prior to bedtime being near her big brother! Next to his bed, her crib. ....
Pat MM