Help I have a VERY little sleeper

My daughter who is about to be 4 months, is such a light sleeper, she’ll wake up to any noise. We even have TWO white noise speakers going full blast 24/7, in our bedroom that she sleeps in. I’m the exact same way, I can hear through the super loud white noise and anything will wake me up, even her just stirring. She sleeps in a side sleeper next to the bed. We’ve noticed when we just lay her down on our bed to change her she Zonks out. But she hardly naps through out the day, maybe a couple of time for 15-20 mins. Any advice would be great, because I’m getting less sleep than I was when she was a newborn.