I feel your pain! My son was almost the same thing too. We used to have his crib in our room, well, pretty much the same as he sleeping in our bed. He woke up so many times, almost every 2 hours, and we have to comfort him by patting his back, rubbing his back...Anyway, we moved him to his room when he's 13 months, and boy he screaming at night. So, I have to put a twin mattress next to his crib and sort of staying w/ him for the first couple days. Each time he wakes up I stick my hand thru the crib rail and touch him and said something to let him know i'm still there. Then for about couple days to a week, i do less talking and patting, and then finally stop coming to him or sleep next to him. He still wakes up and cries at night, but just 1 or 2 times. And there're sometimes we get very lucky that he wakes up and cries for just about 15 seconds (usually about 5 minutes to 20 minutes, worst is 30 minutes and that's right after he came out of a cold, which we practically sleep next to him the whole time to monitor him) He's 17 months old now, and still wakes up at night, but i notice that if I stop coming to him and let him cries a bit, he'll wake up less.
Good luck w/ everything!