Hello idiego,
I did the same for the first 2 weeks of Level 1. Once I realized it - after going through many posts on the forum - I began following the program as recommended, i.e. 6 days BrainEV, 1 day break.
I did not start from the beginning but kept on as planned and started on Level 2 after the 4 weeks. I don't believe there was any harm done by missing the break but now I do make sure, as with
any exercise program, that I incorporate 1 day of rest.
Enjoy the journey!