If someone get 2 or more of your seed phrase I'm sure that they're not going to harm you, come to think of it. Does it mean that you mistakenly disclose one or two of your seed phrase to people? If that's the case then i think you're still safe, that's if they didn't get the full seed phrase. And sure carving your seed phrase in stone is also a nice way of saving it because if you choose to write it somewhere like a shit of paper and if water mistakenly splash on it the whole thing will just fade away and sometimes it can even be affected by flood that's for those that live in those places that easily get flooded. Me personally I have my seed phrase written in different places to avoid one particular point of failure.