I'm doing this too but I input 3 words wrong in my recovery seed phrase so that only 3 words will I need instead of 12 and also as safety precaution in case my google drive is hacked. It will be difficult for a hacker to spot what's wrong in case he will try to use software to crack it. I really don't like the idea of writing it physically because I will not be comfortable when I'm away or there's a natural disaster hitting my country. I believe storing the part of it on our brain will make it safe to anything unless you die which is almost same if you written it on paper or online since your relative will never about it.