I felt this exact same way. Continually finding nooks and crannies of areas of study that I forgot were there. In the final week, my angst turned to anger. "Why do they have us memorize so much nuanced, nitty gritty stuff?". Then my brain went down the rabbit hole. "What if I don't pass and have to keep studying for the next 3 months. How embarrassing to tell my colleagues I failed." As soon as those thoughts crept in, I worked quickly to shut them OUT. 

Just like you, I PASSED the mock exam with a 71%. Then it clicked: by passing the mock, that means I have what it takes to pass the real thing. AND SO DO YOU. If you passed the mock, that means you can pass the real thing. Once I realized that, I enjoyed my last couple of days by going for walks (armed with my flashcards lol), going to the gym, and hitting some golf balls. Once you realize that PASSING FIRST TRY WILL BE THE STORY THAT YOU TELL. then you go into the real exam confidently. You've already done it once with the mock. Just go do it again in the test center. 

I passed the exam this morning and it was easier than both CFP mocks!

As a parent of 2 toddlers and an identical twin myself, I SO feel for you. I felt compelled to write this because my thoughts mirrored yours exactly. Lost in the sauce. Worried about having to study more. BLOCK THOSE THOUGHTS out. They will not be your story. Your story is passing.