After you turn on the tea machine, what is the minimum amount of time you should wait before
brewing tea?

It really depends on the tea type.

Explanation:

Our general rule of thumb is 4 to 5+ minutes for herbal tea and black tea and 3 to 4 minutes for white tea and green tea, which can become bitter if over-steeped. Try steeping these for 2 min, then start sipping every 30 seconds until you find your ideal flavor.

the answer is false, i know this answer is late but its for anyone else that needs it.