It sucks to have a baby that is fussy all the time. Our first one was like that. He did sleep about 4 maybe 5 hours at night but day time he was up and fussy. Short little naps was about it. Found out he had a reaction to his mother's milk. Switched him to formula and life got back to almost normal. Our second, she was a breeze.I am beginning to think this is where kid number 2 originated from.... It is getting worse as time goes on... He will not sleep even 1 hour anymore unless he is wrapped in the baby carry on the body thing my wears..... I mean all night long, every night.... All day long, every day, he cries and fusses.... I am going to have a heart attack if I don't get some solid sack time....
Hopefully your little guy gets comfortable in this new world of his really soon.