Baby refusing sleep

Any advice from other mamas? 6 week old baby absolutely refusing to sleep more than maybe 30 minutes. Screams until his eyes water and he's choking on drool/vomit. We've tried swaddling, rocking, bouncing, patting, gas drops(he also gets very gassy due to the crying of course..) running water used to help but now it doesn't or it only helps to have the water running full blast and his whole nap, that's way too much water to waste, he doesn't like any white noise machines or any other sounds they play. He doesn't seem to want to be held he pushes away screaming. ( I also understand babies his age don't have complete control of their limbs so pushing away may be involuntary.) it's worse at night but happens during the day too. I have to go back to work at the end of this week and I'm afraid no one will want to watch him while he's being like this. I know he's just overly tired and that's why he's screaming but how on earth do I get him to sleep???