My seedling has been growing for almost two weeks now and I noticed that the stem isn't strong enough to hold up the grouping of leaves its grown. Is there anything I can do to help it strength itself to be able to hold itself up on its own?
Point a fan towards it and turn the fan on low. Oscillating fans work best. The stem will strengthen very quickly.
A fan blowing on it lightly simulates the breeze thats in the air out doors. You can also with a gloved hand bend it back and forth very lightly everyday. That will simulate some thicker stem development..remember lightly.