As long as you have holes in your container, you can never overwater when you feed. Like wet said tho, dont give her any sips of water just because you think she might want it...Let the soil dry out, and you will notice the plant will start to look this way again, but this time it will be because it actually needs water.. In fact, the plant, and roots grows better this way. When roots are always wet, or have food, they dont go 'looking' for water. In other words, if the roots dont grow and develop, the plant wont either. Good luck. You'll get the hang of it.