I would feed her again and load her up on molasis. Trim back some of the fan leaves blocking light to the lower buds. Shes only been flowering now for 45 days or 6 weeks 3 days, most bud takes atleast 8 weeks. Honestly order a microscope for 5-10 bucks of ebay or something, and you will get it before she is done so you can pick the perfect time instead of guessing.