Weird predicament

My girl had put herself into the 4 8oz bottle routine which is fine for me because less bottles and more sleep at night. But that’s the issue she’s sleeping 8+hour stretches now and she’s still in size 1 diapers because 2s literally cover from her sternum down and about half her back. She’s overpeeing ones over night. I know I need to size her up but is a 2 going to hold that long?