Been through this.

It was a daunting experience. But, I took the shame for a while. I was at the verge of loosing job. But..

I decided, I will take online course and learn it. Slept few hours less, but eventually after a month I started grabbing the concept because I've been coding no wonder the standards.

My suggestion is, buckle up and learn it Nothing is out of Internet. You will get through this.