In lieu of storing entropy, keep the mnemonic produced within the entropy. Steganography may be helpful when storing the mnemonic. The random mnemonic generator on this site makes use of a cryptographically safe random selection generator. The built-in random generator can usually be reliable over your own intuition about randomness. https://mysocialport.com/story4230309/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator