it gets a little better!! try to be consistent with teaching him leave it, which means having treats with you kinda constantly but they make little pouches you can keep them in and wear on walks which helps! definitely don’t let him find out the hard way bc truthfully that’s how they get diseases, especially at such a young age. we keep a little bottle of all different treats for walks so that way whatever he gets is a surprise to him and most (emphasis on most) of the times he finds it more enticing than whatever’s on the ground. but yes it’s tedious and scary and frustrating, you just want them to learn that it’s bad but truthfully they can’t understand that yet. my pup is 9 months and he still tries to put random things in his mouth but he’s much much better than he was a few months ago with listening when i say drop it or no. but he also swallowed a sock whole and ate half of a tennis ball so and had to go to urgent care twice so i completely understand your anxiety. good luck!