I wouldn't know what you can do at this stage since you initiated flowering weeks ago. i have never done heavier training, only lst and defoliation..i wouldn't think you can supercrop since it's in flower and can cause major stress...but i could be wrong on that. Since the plant can't really be reshaped at this stage, in my thoughts, then all you can do is bring light where the main (top) one, can't reach. Putting smaller cfl bulbs around the lower part of the plant. Again, as for when the flowers appear..for me its within a week..i did have 3 auto's last year, that just kept growing and growing. Calyxes formed at the right time, but no buds grew..i waited 4 weeks, and no growth at all..the autos were bigger than my photo plants! In the end i threw them out in week 9 as nothing was happening at all for 4 weeks. I even tried changing the light schedule, but nothing. I know that one of them did have a bit too much nitrogen as i wasn't used to having a sativa around, and overfed her..but the other two were ok in that sense, 3 different strains, neither of the three flowered..never happened before or since..i have no idea what went wrong!