baby sleep pattern part two

So again.... baby is now four months ... he must be the only baby that's not sleeping much at the age around the clock. Lately I rock him to sleep and he's knocked out... moment I put him down he wiggles around and wakes up... i feel like we are going backwards again as if he's a new born and I'm so dam sleep deprived. I read so much from other moms how their baby sleeps thru out the night or at least in stretchs ... this kid he doesn't sleep much during the day and catnaps And then all of a sudden at night he's just sleeps and wakes up every hour and is fussy and crying. Who knows what he wants but imma bout to lose it.....