Adding flannel to Gerber prefolds?

[Mom2SammyJoe]

I have about 5 dozen Gerber prefolds that I received for shower gifts for DS 2 years ago. They are the kind with poly-fil. We diapered him in these effectively with Snappies and a variety of nylon/vinyl/PUL covers for about 9 months before he soaked through all the time. We upgraded to BG, which has worked okay.
Anyway, new baby is due in 8 weeks and I planned to use my prefolds again with some nicer covers. Now I have found all this info telling my how not good my Gerber prefolds are and I am looking for ways to make them better without buying a whole new stash of infant diapers. I have some and plan to buy more premium CPFs for when baby is bigger.
Would it be helpful to sew strips of flannel to the center of my prefolds to make them more absorbant? How many layers? Could I just use a zigzag stitch or should I fold the edges under before sewing? I don't have the toughest sewing machine in the world, so I don't really know how many layers it can handle.
Or should I just leave the diapers alone? They may not be the best, but they did work for DS.
Thanks for the help.

[thixle]

I got a 6 pack for Xmas and just stack 2 together (like it's just 1) and snappi With 5 dozen, you'll still have 2.5 dozen "dual" dipes. If it catches baby pee, it's good, IMO

[MeadowAndColtsMama]

I'm using Gerber prefolds on ds (5 weeks old) that's how new I am to cloth diapering. But they're fine for me so far, during the day anyway. I sometimes put an insert down the middle at night. Then just do a normal fold over it. Like the insert is centered and toward the top. Hope that makes sense. And I only have a dozen of those, yes I'm doing a lot of laundry! But I think you'll be fine, maybe get cpf's when baby gets bigger. That's my plan.