Baby is 7 months. Not sure on weight exactly. In size 4 pampers air dry. Without fail baby leaks EVERY single night. I’ve tried the nappy pants incase I wasn’t doing them up right but just the same! I’ve thought if the 4s are too big but the 3s are SO small. I’m considering trying another brand? I’m not sure what to do but each morning getting baby out of sleep bag it’s not fair on baby to be wet but no idea why it’s happening! It’s normally always on baby’s right side. Can anyone please help? Ftm and lost! Also posted in here for traffic.