Do you have any used coffee grounds? They are high in nitrogen. If you don't have any you can usually get them for free at your local coffee shop. Take about a half cup, sprinkle over your soil and water. Every time you water some of the nitrogen will get released into the soil. This should work well for your small plant.
Coffee and gardening
http://www.sustainableenterprises.com/Business/coffeefert.htm
Every day across America, Asia and Europe, millions of pots of coffee and tea are brewed, and the millions of pounds of wet grounds, filters and bags thrown in the trash. This is both wasteful and foolish.
Coffee by-products can be used in the garden and farm as follows:
Sprinkle used grounds around plants before rain or watering, for a slow-release nitrogen.
Add to compost piles to increase nitrogen balance. Coffee filters and tea bags break down rapidly during composting.
Dilute with water for a gentle, fast-acting liquid fertilizer. Use about a half-pound can of wet grounds in a five-gallon bucket of water; let sit outdoors to achieve ambient temperature.
Mix into soil for houseplants or new vegetable beds.
Encircle the base of the plant with a coffee and eggshell barrier to repel pests.
If you are into vermi-posting, feed a little bit to your worms