Appeared for H1b stamping before lockdown and issued 221g Is pending from 13 months

I had appeared for H1b stamping in Feb 2020 and a 221 g was issued and is still pending for the last 13 months, My project on which I appeared for visa interview has been unfortunately completed it was a contract position.
And now I got a new project < SO I am looking to re-apply for stamping.
Can anyone please help me out in the procedure for withdrawing the current 221g and reappearing for visa stamping with my new project?
I have my h1b valid till JAN-2022.