The easy option is to quit. If it really starts to get to you then I would explore that route. If this is a transfer back to the old position, be careful. I would also start networking with people in your field just in case.
I have been thrown in over my head and had to learn on the fly a few times. My current position is like being a 2LT in the army or marine corps where the guys you are overseeing have more experience than you.
I have worked in the oil fields a few times. My first time I was way over my head. I had to change my thinking on a lot of things and decided the money was worth the stress. I learned to prioritize and divide and conquer. I also learned to work in parallel (update the well log while the chemicals are reacting to the sample under the microscope).
Direct your focus to the most important tasks overall. Make a priority list and change it as needed.
Yes you will make mistakes and sometimes big ones. Do not let them get you down. Learn and try as you go.