Three Weeks Into Flowering

I believe my plant is about 3 weeks into flowering. It is an autoflower, la diva, and so far is coming along. I'm not sure if I should stop nutes now or in a week. I have a curious question. I currently have unrefined light brown sugar, organic. I am interested in using this product mixed with water in a few days. Would this be too soon or should I wait. I know it's not molasses, but I believe it does contain some or if not at least, it's organic. Some of you may disagree in using sugar water for plants. I'm sure the bugs would love it jk. However I believe even a small amount might do my plant some good. I just want to hear some opinions on the matter before I start.

Sincerely,
Captain Jack