Leaves turn yellow and dying... Nitrogen deficiency?

Please check out the pics and tell me if it looks like a nutrient problem. I just started feeding it 20-20-20 last weekend, I just mix 1/2 teaspoon in a gallon of water and use that whenever I need to water. I'm using organic potting soil, nothing special.

you want to ease off of the waterings a bit you are drowning your girl. thats why she droops like that. the next thing is to back off the nutes. the burn on the leaf tips is telling you that shes had enough nutes.