That’s a 15 actual watt light. you would need to take the cover off to get the light to put out anything for growing and that’s not enough for your plant. You need at least 3 of those spaced close together to have enough light to grow a halfway decent plant. The lights would have to be about 12" from the plant to give you a couple of ounces.
I’m not a light expert, but I found out from my own inexperience that if these plants don’t get good light, they won’t grow very well. They are not houseplants. They have to be tricked into thinking they are outside. I don’t want to see you give up, but mostly don’t want to see you fail.