JoKalsbeek
Expert
I don't know. It wholly depends on how much sugar is stored in your liver, and how much it'll start dumping, but... It would be fast. Don't be in too big a rush though. Blood sugar changes can wreak havoc when going too fast. Your eyesight'll change, so vision'll be blurry for a while as it is, but from what i've heard from others, retinopathy could become a factor with too a quick change. Your body'd probably become dehydrated (adding alcohol at that stage would make it exponentially worse), so there'd be fatigue and headaches as well, and I don't know whether you have electrolyte supplements on hand to fix that. Don't be in such a rush. Your body is used to high numbers now, crashing them down will make you feel quite unwell most likely, making you deal with false hypo's on top of dehydration. Can it be done? Possibly. Would you feel like hell? More than likely. Slow and steady would be better, though I understand you feel the need to get answers quickly. I did zero carb for a while, and it messed me up for about a month until stabilizing. There's a reason I went back to keto rather than zero after half a year of that, though. Like @HSSS said, it HAS to be sustainable for basically forever. This isn't a wuick fix and back to what used to be.Without taking the gliclazide? Within a week?
On top of that, you don't know what kind of diabetes you're dealing with... You mentioned already doing zero carb and still being in the teens, which makes me wonder, was it truly zero carb, yea or nay? Or were mistakes made and were these some carbs, or was it truly zero and is another type of diabetes likely. You haven't mentioned yet what you've been eating and drinking on the "zero" days. So if you remember, please do sum up some, if you can?