I'd usually aim for drinking the first coffee/tea about 1-2 hours after waking (it is important to wake up by circadian rhythms to get the best effect) and drin

I'd usually aim for drinking the first coffee/tea about 1-2 hours after waking (it is important to wake up by circadian rhythms to get the best effect) and drink the last beverage around 2pm, or at latest 3pm.