Pampers Nappies have lost its value

Pampers used to be known as the best baby happy product but lately. I dnt know what happened. I'm not sure if the 2018 stock has a defect but those nappies leak like nobodies business. My son is almost 2 but changes his nappy a minimum of 3 times between 8pm n 3am due to nappy leakage. And when you take the nappy off, it's not even full yet, which is surprising as to then why is it leaking. Thank goodness I'm putting him to potty training in a months time