we tried our WNNN with a PUL wrap last night. Normally a standard minki stuffed with PD ad 2 EP hemp works for 12 hours . The WNNN was soaked in 4-5 hours. This may have been because Nathan didn't sleep as deeply as normal tho I guess. What can I boost the WNNN with? Need to try wool at night but needs lanolising a few more times 1st I think!
Try popping a hemp booster between the nappy and wrap. You'll find it works a lot better when you use wool though (do you have a fleece wrap you can use in the meantime? That will also be a lot better than PUL).
How did you fold the insert? I use NN inserts in Ryan's Minki's and I fold the smaller poppered insert into 3 so its at the front of the nappy and also add an Ella's House hemp insert folded into four at the front underneath the trifold insert. It usually lasts Ryan 10/11 hours.