D..
Holy mackeral. You nurse him 5-6 times a night. Bless your heart. I wish you had written a few weeks ago instead of waiting til the night before you start work.
Stop the nursing in the middle of the night. I know it's hard. But he does not need the night nursings. It is a WANT and not a need. He is using nursing to soothe him back to sleep. You are a glorified pacifier. If you want him to learn to sleep, you need to stop the night nursing.
I will tell you that other peds will tell you that he is not too young to cry it out. If you and your husband cannot deal with letting him cry it out, then your husband needs to go into him instead of you because you represent the nursing aspect of night time. It will be hard on your husband, but if he supports you not ending up in the hospital over exhaustion, then he will do this.
Have him go sit in floor beside the crib (hopefully with his back to wall and a pillow to sit on). He should put his hand through the slats and touch your baby's foot. NOTHING ELSE. No talking, no picking him up, no standing beside the crib. He will cry like nobody's business because he wants what he wants. If he is able to stand in the crib, he will lay down in order to feel Daddy's hand on his leg and be closer to him. Hopefully he's not able to stand in the crib yet - it's easier to do this if he isn't.
He will eventually wear himself out crying and fall asleep. ON HIS OWN. Your husband needs to continue to do this until he is no longer waking up so much. And your son WILL stop waking up because there is nothing to wake up for.
I urge you to do this so that you can make it through your days. If you don't, you will crash. Keep his 8:30 bedtime, having given him cereal before bedtime and a good nursing. Don't let him fall asleep nursing on you - put him down awake, but groggy. Walk out of the room before he is asleep, even if he cries. He needs to fall asleep WITHOUT you in there so that he knows where he is and allows himself to drop off.
It's going to be hard, but you need to do it. None of what is going on in the middle of the night now is worth you being in the hospital over, mama. Tell your husband this.
Good luck!
Dawn