Hello
@zack1, to use the far red leds as sleep/flower initiator you should turn on your far red leds when your regular grow lights turn off, for 5 to 10min up to 15min, too much of it could stress your plants and promote a bad flowering, so I suggest you take the time to experiment and find the sweet spot. They normally sleep in 2h with this boost you should gain 1,5h avg sleep time.
Let me know your results with it, happy growing!