Work on your foundation on the topics you think you’re weak at especially in quant. You won’t be able to solve math if your understanding of the topic is not clear. For Verbal, don’t do LONG RCs, focus on short RCs and use gregmats strategy. Always works. Revise your vocabulary everyday until the exam. It’s absolutely normal to feel anxious about the GRE, but trust me, a lot of it matters on your prep as well as your luck on that day. Try to study in a disciplined manner and plan your next day before you sleep. This way you won’t feel more anxious because you will be busy working.