Should I redo another 7 day fast?

I didn't buldge from the protocol since March, but I did have a setback with the B complex that made me crash. I thought 3 days were enough for a reset, but CD's comment made me doubt. So good enough or I should do 7?

I ask because I would start it this week, so I can be good before my exams. I have never been more motivated to crush the protocol so I don't want to fuck up any aspect.