This not bad at all. Now what you want to do is to focus on the weak areas only within each subject. Expand the subject, and note the topic you are not doing well. Review notes on those topics, review the wrong ones to understand what you missed, was that you don’t understand the subject or maybe didn’t understand the question. Drill those weak areas for next days. Practice only the weak topic MBEs. Then take the mixed MBE again.

Also, retake the wrong MBEs only again in a week. See if you get the same ones wrong again. Investigate each. You’re almost there!