How to know if you’re ready?

I scheduled to take my test in two weeks and have realistically been studying for a month mainly using Quizlets I find online through Reddit threads and Pocket Prep, which I’ve mainly used for making flashcards by hand daily. I’ve been doing okay on the 10 question quizzes, but it feels like some of the questions are way harder than what the exam is going to be like? I’m not sure if this is true, but I don’t really know what to go off of anymore and if I even know if I’m ready to take it. I saw someone say Inman is more accurate to the test than Pocket Prep so I will start incorporating that a lot more. I do not do well with audiobooks or podcasts as I get really distracted and I probably wouldn’t retain much. I work full-time as an “RD” (they are waiting for me to take my test with a dietitian is there with me to oversee) and study at work for a couple hours daily with some studying at home but I am so tired by the time i’m off it’s difficult to do another 2-3 hours. I think I’m also just very stressed out and not really sure if I know that I am ready.

I would like to schedule my test out another 2 weeks later but it’s so booked up for a couple months. I’m scared to cancel and then miss my opportunity if I did pass.