yea i actually give grow big right up until i see the first pistil (for girls), then i drop to big bloom only for at least a week so she naturally enters flower, then SLOWLY (i start at 1/8th strength, then 1/4th..) work into the tiger bloom. I water every watering, and i don't go over 1/4th dose, but i use a bunch of additives and such as well (big bud, bud candy, overdrive, etc)
So basically, by week 3 of flower or so she's had about a full week of 1/4th tiger bloom, then i start easing the grow big in for 2 weeks (3 & 4) for that nitrogen boost that fox farm calls for.. works flawlessly for me. My plants never get a watering that doesn't have big bloom in it.
Hope thats what you were lookin for.. im addicted to the 3 part formula now.. so much control