Oh My!

I love my little man, I really really do, he's gorgeous and funny and smells devine. Nothing makes me happier than cuddling him in my arms.....
but....
he does cry so much, I mean all day long, and mostly for no reason I can see. I've tried everything but I just can't figure him out. He feeds well and loves his food, but I can't feed him all day long just to keep him happy. He likes going out in his pushchair, but I can't push him around all day long just to keep him happy.
He doesn't sleep much either. In fact he won't sleep at all unless I'm in smelling distance. I don't have to be touching him but if I move away he'll wake and he'll cry. I've taken to having him downstairs with me all evening until I go to bed, and then he sleeps in bed with me. It's the only way to get any sleep at all. It's not like I can leave him to cry it out if I wanted to, not when he has to share with his sisters.
He reminds me so much of Craige in so many ways. Craige was my first so I thought it was normal for a baby to be so damn miserable all the time, until I had his sister seventeen months later and she was a little angel. All my girls have been great, apart from Lucy, who had bad colic and was a bad sleeper but she's ok now.
It's getting me down so much. I have so many other things going on at the moment that I can't handle the stress of a crying baby. It's not that I don't give him enough attention, we do loads together, but I'm not allowed to do anything else at all, ever, if I'm not giving Joseph attention then Joseph his crying his little head off.
please, please, please let it be a phase he'll grow out of very soon.