I agree with everything that has already been said, also talk to your doctor about changing to SGLT2 inhibitors so as to allow you to improve your diet without the fear of hypos. SGLT2 inhibitors also help with weight loss, unlike Gliclazide that tends to result in weight gain.
But provided you test often, and see your doctor as soon as your BG starts to get close to 5, you should have no real issues with Gliclazide. (We can't tell you what to do with drugs, however, we can tell you what we did ourselves, I stopped taking Gliclazide as soon as my BG got within Hypos range, however, it may have been better if I had reduced the dose, by cutting a tablet in half. But I monitored my BG closer to see if it remain low without the Gliclazide.) If you are told you must eat carbs at every meal due to taking Gliclazide, tell the nurse/doctor its your body and you have decided you will not eat carbs.
However when taking Gliclazide, you need to keep your carbs ABOUT the same at each meal and each day, you can't have some days when you are very high carbs (300g) and other days when you are low carb (50g) and expect to get good BG levels. Likewise, intermittent fasting may not be a good ideal for you, other than trying to have breakfast later, so as to get longer between dinner one day and breakfast the next day.
And remember 10 minutes walk after a meal does wonders for BG levels.
