Too much meditation?

Is there such a thing as too much meditation?

Meditation helps you experience the peaceful calm of your natural state of being, which can only be found in the present moment, which is timeless.  
It’s the timelessness that makes this an interesting question to answer. 
How much time does it take to shift your perspective to timelessness? 
It happens in a nanosecond, even if it takes two hours to get there!
Can you move through your day practicing mindfulness in the present moment? If you can, then you are essentially meditating all day, so the answer to the question is…no.