My 12 month old has worn Earth's Best Diapers for a while now and they usually work and fit well until he's ready to go up a size. They are a little stiffer than regular diapers so I've had to size him up well before the weight limits listed.

He's been wearing size 5 (27+ lbs) for a couple months now and he weighs 25 lbs. 3 times this week he leaked out the side of the diaper. Once he peed through at night, so I picked up some Honest Overnights in size 5 (Target didn't have size 6).

I'm wondering if he needs to go up a size already. I would pick up a pack to try but Target doesn't have size 6 in Earth's Best either. I just got our Amazon shipment of size 5s, too, Thoughts?