How much water every 3 days?

Please don't go by any chart or anyone else telling you what quantity of water to give when... your PLANT and your POT should be the one telling you what is needed when. Lift your pot... if it feels very lightweight, you need to give it something - you should be alternating as well ... water/feed/water/feed etc. Make sure you're watering/feeding at least out to the "drip line" if not a little further. The roots will not grow into dry soil and you want the roots to be growing vigorously. You also don't want to overwater which is why you want the pot to feel lightweight when giving it something. And finally, make sure everything you're giving her is PH balanced (between 6.0 and 6.5). Good luck!