Thoughts on white noise?

I’ve been using white noise for the past couple of weeks with my 8 week old. It has helped tremendously with getting him to sleep. I put it on the lowest setting right next to the bassinet or attached to the pack n play. I let it run all night and for all naps. Some articles I’m reading are making me nervous that it’s bad for babies hearing and/or development. I didn’t always have it on the lowest setting either (I didn’t have it on the highest either). Have I caused hearing damage to my child? I read somewhere that they recommend having it 7 feet away and on the lowest setting. That sounds too far. What do you do?