ckd question

if u have already seen this on other forums i apologize…
i was wondering if instead of usual 5 1/2 low carb days and 1 1/2 carbup days, what if i did 4 days low and one day high?
i do manual labor for job, and i do HIIT cardio for 10 min a day also, including regular workouts. i figure this gets me at carb depletion earlier, and maybe i can save more muscle this way, or would i lose the effectiveness of the diet?
i am very strict with it the diet otherwise and am curious to know before next carbup day