sorry no help here I have a nude nearly 6 year old he discovered undressing at about 1 and although we have mastered a reasonable amount of clothing in public at home is another matter the only thing I found helped with nappies was using terries with 2 nappy pins, he could take off the wrap but usually couldn't wriggle out of the nappy
I don't mind the nakedness too much apart from the fact that my house is drafty and autumn is here. It's the constantly cleaning up pee and poop! He doesn't even have a tell so a can "catch" with a terry!!
We've got some vests again and he can't open them now just need to find vests big enough for over his night nappy! I don't like rompers/sleep suits much as there always massively long and he trips over... And 15 thousand poppers while I'm wrestling him into Jimjams is exhausting!!