prob 5 more weeks. What wattage lights are u using? and it looks like you're using the wrong lights. You want 2700k colored lights, and at least 80 watts to get some decent yield.
read the faq it will help you out a lot. Not to break your spirit, but the way it looks like it's going, it's just going to be some fluffy bud. and in case that's not clear, fluffy bud is not good.
increase wattage and change the color of lights, and that will increase your yield. It's a little late to truly increase your yield, as you have already switched to flowering. Next time start with high wattage from veg state.