My daughter, now two, was the same way. There were several nights I just put her in her swing and said "forget it! I need sleep too!" and then there are nights I put her in her crib and ended up moving her to the swing in the middle of the night.
Life gets better, I promise. These times are hard, especially the lack of sleep, but wait it out, know it's okay and work with him as best you can. Also know, it's important for you to get your sleep too and every now and again if you just have to leave him there for the night, then do so.
I broke every cardinal rule: Co-cleeping, toddler bed at 1 year, and holding my babies when they cried.. they turned out pretty okay. There's not a whole lot you can do wrong when you just love them.
~J.