Hey, Anna! I can remember back to when I first started (big sigh). It took about 6 months before I started feeling like I was a little on top of things. I went home feeling terrible many times. You are learning something that nursing school can't really give you much experience with--organizating the workload of your shift. It does get better. You are on a very busy shift, 3-11. Lots of admissions and new orders.
What I would probably do with this doctor is just go right to where she is charting and let her know (nicely) who you are and that you need to know if there are any stat orders or things that she wants done now while she is writing that you could get started on. Those would be verbal orders that you could go ahead and take action on. When you get skilled at this you'll have most of the stuff done by the time you get the chart so you'll just have to sign off the written order. And, if she forgets to write the order, you can write the verbal order. Does that help? It's kind of an organizational dance you have to do.
Since she's a regular I would definitely cultivate a relationship with her so eventually you'll feel more comfortable around her. You can't be intimidated by her because she's a doctor. Think of yourself as being her office nurse there in the hospital. She needs you and the other hospital nurses to carry out her orders. Once she gets used to seeing you coming around she should figure it out. But, let her know that you are waiting on her orders. It's also a good way to find out what's going on in the doctor's mind with regard to their plan of care for the patient because they don't always write that down in their progress notes.
In my heyday as a staff RN and team leader we made rounds with each doctor that showed up on our unit. We stuck with the doc while he examined and talked to the patient unless we were told to scram for some reason. We had a good idea of what the doc was going to order or we would discuss it with him as we went on to the next patient. That helped us in planning out all the different kind of care we were going to have to be giving for our shift.
I suspect that the reason the nurse manager is on you is because the shift that follows you is having to take off this doctor's orders, right? Stand up for yourself a bit and let the NM know that the doctor is hogging the charts and outside of clubbing her on the head to get them there is nothing else you can do if she won't give them up. Third shift won't be so upset if some of the orders have already been carried out and all they need to do is sign them off. Just make very clear communications about what you have gotten done before you leave.
Hey, a year from now you'll be a pro at this!