221G Yellow form Administrative processing

Hi Guys,
I have attended an interview for H1B on Jan 2021 in Singapore, and initially, they were asked NIE letter with 221G. after the travel ban lift, I went back on April-2021 and they took all my documents and asked for additional documents for the company H1B employee list and my employer submitted the documents the next day.
how many days it will take to update any decision from the embassy, its almost 40 days. is there any form except mail we can call back and check?

There is no fixed time. Each US embassy has its own processing time.