white noise

My LO is 7 weeks old and I just now found the magic of white noise. Immediately put him to sleep and I was able to put him in his rock n play (he would have instantly woken up if I did that). He slept for 3 hours and would have slept longer if my phone that had been playing it hadn't died. Now in bed with it playing on my laptop (YouTube has videos that will play for 8 or 10 hours) and he's fallen asleep again. I know all babies are different but it's worth a shot if your LO is having troubles at night.