Would you consider moving him out of your room? I'm only thinking cause Emily is still in my room and when she wakes she knows I am there so pushes he head against the bars tries to reach for me etc.
Some nights I have gone and slept in the other room and I found her to sleep so much better, actually slept thru. So we are planning on moving her out soon, (when we get around to it)

Has he just started with the standing? I remember with Ash having issues when she first started standing crying at the cot and I'd spend my time lying her down patting her, she'd stand up, lying her down again over and over and eventually she caught on.