Why do you make some strange mistakes in some pieces of your program in places that usually go fine during practice?
Nerves might be one of the reasons. If you can't stop thinking about a mistake which you made a moment ago, you are bound to make some new ones pretty soon.
If you find yourself in this situation, force yourself to focus by staying in the current measure and keep breathing slowly and deeply.
Also, for your next recital, make sure you can play your program at least 30 days before the deadline.
I bet this was the reason for you this time too.
When in doubt, go back to basics.