all the leaves dying(or a large percentage) means its putting the energy from em into the buds, thats a pretty strong signal you are getting close to harvest. i wouldnt be surprised in the least if they are ready now or within the week,maybe 2. did you start your flush yet? dont forget to give em 24-48 hrs dark b4 harvest. thc is the plants suntan lotion, its degraded by light and re-built up during the night, harvesting after 48 hrs after dark ensures it has plenty of time to put out as much thc as possible. sorry if ya already knew this, im not implying anything bad by this comment about you like your dumb or anything(people here take stuff too personal ALOT so i just wanted to be safe and warn ya before hand so you dont take it the wrong way.), but i just want to make sure you do. hope this helps, any other questions?