I finished day 7 on Friday, then I had to quit because I was exhausted. I felt totally burnt out on Friday, like I couldn't do another day....I went to bed without doing anything...and I slept for 12 hours

I felt like I was really coming along, and then I felt drained. Now I am refreshed because I had a good sleep-ful weekend.

Should I begin part 2 now, or should I start over again? If I start over again will the same energy depletion happen? Some advice please