If you write the seed phrase in a special book and are afraid other people can access it, you can use tricks like changing 1 or 2 positions of the words. That way, even if someone steals your phrase, they can't access your wallet. (You just need to change the position of the two words, no need to change too much to confuse yourself).
Backup your wallet seed as most simplest as possible but make sure you store your backup safely and avoid eyes of other people.
Don't try to trick others and consequently trap yourself with a risky backup method. Changing positions of 1, 2 or 3 words in your wallet seed is a terrible idea. You will need to remember it, need to have a note for these positions but if you lose those position order by a memory loss, note loss, you will need luckiness to recover your wallet seed.
How to back up a seed phrase