How crazy am I that I'm envious of your puppy eating clothes? Getting starry eyed for puppyhood again.
Anyways, this behavior will get better over time. But, it's unlikely to stop 100% as everyone here is pointing out.
….you may want to try decoy items? Just a suggestion. I've done that with tissues/toys and it worked pretty well...never tried it with clothing or shoes so I have no idea if it would make things worse, or not, as far as training them goes. If it were me though....I'd get an old pair of dirty sneakers or something from the salvation army stores and 'leave them out' that way at least he wouldn't get into the 500 dollar shoes/jeans/undies.
I used to put out decoy tissues and stuffed animals when Beo was a puppy....I would let him watch me put them somewhere 'out of reach' and of course he would go straight for those items as soon as my back was turned.
Or....the best suggestion already mentioned is just to pick up your stuff 🙂 If you live in a multifamily household sometimes that's a hard pill to swallow though. I used the decoy items when I used lived with my family because I got tired of having to replace my sister's expensive items he would chew up. My family never learned to pick up their things.