I think I'd stick w/ 1/2 flower tab one week and 1/2 the next ... the surge of the proper nutrition at the beginning of flowering helps to develop bud sites and a tab will feed a bush for 4-6 weeks ... let's wait and see how the big one is doing when it shows sex ... the one in my most recent photos was fed a full tab all at once and it did a great job of feeding for 6 weeks ... I think your biggest could be as big (almost) at harvest ... how long a tab lasts depends a lot on how you water.