Answer
Okay, regarding giving up tea, in the beginning there will definitely be some symptoms due to stopping or reducing it. There may be headaches, bodily discomfort, or difficulty in carrying out your normal duties. Such reactions are natural because the body has become accustomed to it.
Therefore, it is better to gradually reduce the consumption of tea little by little, rather than stopping abruptly. At the same time, continue increasing your chanting of Krishna’s holy names. Unless one develops inner spiritual strength, it becomes very difficult to give up long-standing habits, especially dependence on chemical stimulation for the mind and intelligence to function.
Over time, the body becomes conditioned to rely on such stimulation, and that conditioning does not disappear immediately. It changes gradually and requires some patience.
So, side by side, keep increasing your chanting and steadily reducing the quantity of tea. Slowly, little by little, it will eventually come down to zero. One day it will naturally happen.
For some people it may take a few weeks, while for others it may take a few months. Each person is different, so there is no fixed timeframe. But if one sincerely continues the process, it will definitely happen. As you steadily reduce the dependence and increase spiritual practice, you will personally experience the change.