I_and_Ianswered grow question 5 years ago I'm using the trio, I stopped with the veg for my plants just after stretch, so around the 4 week mark I stopped it
The big sativas, long flower times, still need it thought, like my big banner and amnesia, tbh I prolly should've fed the banner some veg nutes another week again on top of already longer time to feed coz flower is 10-11+ weeks
The plants will tell you if they continue to need a little more nitrogen than the bloom provides, they'll go a little pale to let you know if they want it