Kill it or put it aside because it's so stressed out it might not even live much longer.
Grab that five gallon container. Throw away the peat moss and seed starting mix, you don't need it. Mix the bucket with the Miracle Grow potting soil and 30% perlite. Next you'll need to flush the soil with 10-15 gallon of water. Grab some new seeds, let them sit in a cut of water for 1-2 hours, then sow them into the soil. Don't put them in very deep. Just enough to cover them.
Wait a few days before you water again. When you see the soil change colors, pour a shot glass of water around the seed. Make a little circle around it. After about a week or two it's going to pop up. If you want to give it anything, you can give it carbonated water that's room temperature. Once it's a 6-12 inches tall, give it sprinkle of dry worm casting (a tablespoon) on top of it and continue watering 2-3 times a week. 1 cup of water should be enough until it's 2 feet tall. Eventually it'll get real droopy, and you just give it an extra cup of water. By then you should know your plant. Give it a teaspoon of worm casting once every 2 or 3 weeks.
One more thing...
If your doing this indoors, grab the highest wattage CFL you can get your hands on. At Home Depot, look for the biggest CFL they have. They have a cool white 64watt (the box says 200 watt, but it really aint). Keep the light 2-3 inches away from the plant. This one light blub should get you through the first month or two until it's 2ft. Pretty soon you'll need to get more lighting. Once it's 3 feet, take it outside and let it flower. Remember to harden if off slowly.