gage how upset he is... if he's just whining or kind of crying... LET HIM BE. don't even pay any attention, he will give up and go back to sleep, he sees you, he sees you're sleeping... ignore him, don't look at him just "sleep". if it's full blown hysterical screaming, by all means get up and comfort him... DO NOT pick him up no matter what. calm him down... then say "bed time" and go back to sleep. if he wants to scream then, you might just have to leave the room and let him cry it out... as long as it's his "angry not getting what he wants" cry and hot his "frightened" cry... he'll be all right and so will you ;) kids like to push boundaries.. don't give him any hope, such as getting one of those co sleeping cribs that you can put by your bed. because it's not going to work, and you will eventually have to resort to letting him cry the more hope he has the more he'll put up a fight. the longer you will have to listen to the crying, the less sleep you will have.. be firm mamma!