Yea you could top your plant. That wouldn't be a bad idea. But I think they are drooping due to 2 over watering. Or it could be that you let the soil dry up and the plant is now wilting cuz it needs water. []Deace!
IMO, to small to prune, give it a while to get bigger, and let the fan leafs fully marture, there wilting due to too much sun, to little, to much watering, not enough/or to much fertalizing.
