H1B visa 221g Query

Hi Folks,

I have received 221g after my H1B visa interview on 4th March 2022. After 2 months I was asked by the consular certain documents for further processing. So what are the chances of getting the stamping now. Basically during the interview and also in the email the consular is asking for Client letter which my employer is not providing. For that the employer has shared a writeup email which I have shared to the consulate. So wanted to understand what are the odds of getting the stamping cleared and if not than what is the option I am left with.

Would be glad if anyone of you expert can shred some light on this. Its been more than a year the name selected in lottery 28th March 2021.