Did you encrypt your words or are they human readable right now?

If they’re human readable right now, you have a security gap that’s easily resolved with an hour and some basic James Bond encryption games. Book cyphers, shift cyphers…do whatever you want. Just make sure it’s decryptable as you go through the encryption process for each seed word. You need to understand the encryption algorithm too so that you can manually unwind/decrypt your words if you need them but if you want to write some code in something you’re comfortable with, even something as simple as Excel would work well just as a pivot tool that automates encryption/decryption based on some encryption key.