the way your plant is growing is very interesting i have seen plants like this before where the top 4 fan leaves turn yellow but the rest of the plant looks green and health that means she is struggling like you said earlier the want to get another 6 inches and floursih for you (the teadious lover..

but she want more nitrogen in her flowering period to get that extra 6 inches and fully rippen into a main cola
water mollasses and the 6-4-4 double dose now if no improvemenr after the last then start flushing her out good until 8 weeks

hope this help if you follow what im saying it will work
a.k.a she is consintrating on getter bigger but needs an extra boost right now is what she is telling you.....
