In our family, we use jaggery in traditional dishes, which is fine in small quantities. But if you have high blood sugar, it's best to consult your doctor before eating sweet things.
I used to crave sweet things and had a little gur daily. My boy is a toddler now and absolutely healthy. Just keep the portions small and you are good to go.
Having a tiny bit is generally okay, but please be mindful of the quantity. Since we want to be absolutely careful, maybe check with your doctor once about it.
In moderation, it is fine. Actually, a small piece of gur helped me with my metallic taste and nausea sometimes, but don't eat too much because it generates heat.