Exam in 15 days

Hello guys! My exam is in 15days( Step 1) and i feel like i am forgetting things. I don’t think i am ready to give the exam. But my nmbe scores say otherwise 26: 73% 27: 75% 28:74% 29: 74%. But honestly i feel like i am guess some questions. Is this normal? Or should i postpone the exam? Kindly give your valuable suggestions.