D.B.
I think you have to teach him to self-soothe. There is no way you and your husband can go 11 months without sleep. It's also essential for brain development that your child learn to get through the night and calm himself. And if the next child is getting on that schedule, you're multiplying the problems.
My pediatrician recommended that we do the Ferber method. We did, at 6 months. It was hell for 3-4 nights and then it was done. Please read up on it. It's NOT uncontrolled cry-it-out. Not at all. You don't just leave him in there to cry and cry - you teach him to calm down by rubbing his back, saying a few reassuring words (always the same ones), and NOT picking him up and talking a lot.
One of the reasons he's not sleeping is that he is exhausted. Tired and cranky children don't calm down and get solid sleep.
If you choose another method, fine. But whatever you choose, stick with it. Make sure you and your husband are on exactly the same page, and that you don't waver. It's VERY hard to stay calm and not show your frustration and exhaustion for the few days it takes to do this, but it's worth it.