Thes best thing u can do, is tie back the branches, by this I mean pull them down like in LST, this will also redirect the growth hormone to the lower branches, making them grow bigger. U want. To keep her tied down till about the 5th week, this is when most strains stop there stretching, there is no way to "speed" up the process of flowering, tie it down, bend. The branches as much as they will allow with out stress of snapping them, good luck, and pics would get u more responses. And how many days did u vegg for? Ur plant will normally double if not more once u go from vegg to flower, always keep that in mind, especially a. True Sativa