Thanks for the comment. Yea so, I am able to achieve code block indentation. But with some visual inconsistencies.
My Live Preview
My Reading View
It would be nice if for the live preview, the code block’s left side starts at the indentation (as mentioned in the issue you referenced).
And as it gets nested more and more, the indentation seems to increase visually in live preview. The code (//) start becomes more distant in comparison to the bullet point text.