Sleep regression ? Help. 14 week old

So as soon as my baby hit birthweight she pretty much slept through the night maybe having to do one or two feedings ,and then for the last month only waking up once throughout the night. typically going to bed at eight having a feeding at around 330 or four . now all of a sudden she’s waking up like three times throughout the night ,usually I would just be able to give her her soother and she would fall back to sleep but currently nothing is putting her back to sleep! so my last resort is I’m wondering if she’s hungry ,so I feed her and she eats but it’s still hard to get her back to sleep. she just finished her third Leap as she was two weeks early. I’m tired and I don’t no what’s going on😢😢 any advice?