let's see, first off, what type of soil is that? it looks like it needs some drainage added. mix 1/3 perlite to 2/3 soil. this will help drainage and increase o2/co2 to the roots.

you need to know pH. you can get buy with a freshwater aquarium kit. one can be had for ~$7. a pH pen would be better.

the plant is too young for nutes. especially the amount they are getting fed. you are also over watering/over feeding. a good rule of thumb is to bounce the pot up and down between your index finger and thumb on each hand. make a diamond and pick the pot up by the rim. do this when it's full and when it's dry. you will feel a difference.



-shake