someone please help me with my plant i think its taking a turn for the worst?

i posted a blog a while ago about the same plant trying to find out more information on it which i did not have no luck with, now these thai skunk haze seeds seem quite common as freebies and many growers are coming across them my advice would be to stay away ive enclosed several pictures showing my problems of leaf yellowing and curling slowly working its way down the larger fan leaves eventually falling off or lying among the buds, ive been flowering her now for about 4 months nearly and i lost half of her due to a brake in the main stem as she got to big, i think she has recoverd from it but there doesnt seem to be alot going on, the bottom branches are alot more bud like than the top of the plant and it is generally spindly and not really developing much bud growth, at first i thought it was naturall for some leaves to be falling off as it filled with buds but recently ive noticed the leaves are dying unaturally as there slowly losing colour more and more daily resulting in masses of dead leafs, im not to sure if i overfed my plants so i drained all water in my kit and have just had it running fresh water at the destined ph level of around six and a half ive give minor nutrients since as i thought i was then causing leaves to fall off as the plant was sucking all the last nutrients its stored in them please rescue me someone as shes cost me alot of money and time id be devistated to loose her now thanks for reading look forward to a reply the link is for my phot bucket which contains picture of her before she snapped resulting in me cutting her down in half i have pictures of what ive lost and what she looks like now