Answer: A. It took me months before I could go back and do it again.
Explanation:
To transcribe means to write out a copy of an audio or make a summary of a particular text or story.
When a speaker says: It took me months before I could, like, go back and, you know, do it again. To transcribe this according to the Clean Verbatim Style Guide will be: It took me months before I could go back and do it again.
Therefore, option A is correct. Writing "like go back" and "you know" isn't necessary. It's an informal way of talking especially with one's friend.