How big is your plant ? You need 7 to 9 weeks depending on the strain you are growing . My grow now I started orange bud when it was 12" . Now it's almost 3 feet I let it grow onto the light and burn. because the other 5 did not keep up a couple tried but couldn't. Remember with top light is only groing the top 1/3rd of the plant. Check my thread in hydro. Sorry if your soil growing it takes just a little longer.