Newborn Absorbency

Hello! I have a 3 week old daughter and I’ve been starting my cloth diaper journey. I have a selection of second hand diapers that I’m trying out to see what I like before I commit to a stash. But what I’ve been finding is that my daughter has been completely soaking anything I put on her! This is within the 2 hour window as well. She leaked out of the all in ones and pockets (Nuggles, AMPs, Bumgenius, plus another) even when I added an insert in there as well. I’ve had better luck with inserts/prefolds plus covers. Haven’t leaked out, but whenever I change her, everything is soaked from the top of the diaper to the back! I’ve tried various combinations (cotton prefold plus bamboo or hemp insert, or with a heavier cotton insert) and it’s still full. I don’t think I can even physically fit more in her diaper at this point and I can’t imagine trying to do overnight with these! Still trying to figure out what will work for us, so I thought I’d ask what you do and how much absorbency you have. Also, I want to ask what you use and would recommend. For reference, my daughter is just under 9lbs now and I’ve been using size 1 or newborns. Thanks in advance!