Hugs it's hard when they don't sleep.
A few questions when are you feeding? Did you feed any times from 8pm to 4am?
Has your baby been sick or does he squirm a lot after feeding?
How does he sleep/behave in the day?
Whats a rough idea of any routine you have?
If you can answer those questions it will help in seeing if there is an obvious cause (not always one though)