I don’t know if there is an official answer to this, except the general guideline not too be a perfectionist, just saying something is enough.
But I know many of us learners had this problem and solved it in different ways.
There’s one recent thread on this topic I remember; if you’d like to read more opinions you may have a look at this:
https://forum.saysomethingin.com/t/adventures-in-cofio/18651
Oh and also this:
https://forum.saysomethingin.com/t/to-pause-or-to-write-down/19203