I couldn't have done it that way around, I found that going sober at the start of the week easier to sustain, don't get me wrong though as it was still tough, but keeping my mind off it at work for 5 weekdays, which basically I got home from and was soon in bed due to tiredness, as I wasn't sleeping much, it meant a week sober was chalked up before I hit the weekend and the huge temptation of drinking with having soo much free time . . . might be worth a try!!
Though with severe withdrawal symptoms it may be a non starter, as mentioned above, always check with doctors if withdrawal is going to be dangerous to your health!