Sugar bomb punch

It's most likely due to differing genetics, not your light height. Plants grow at different speeds, even when they are the same cultivar. I say leave everything how it is. Moving your light up could make your plants stretch in a negative way, making the branches floppy and unable to hold themselves up due to too much stretching toward the light. If you're new here, please select the answer that helped you out the most by clicking on the "answer" button underneath what the person said. If you have any questions, feel free to message me on here. You can pull up your messages tab by clicking on the little airplane in a bubble. It's located on the bottom-right of your screen. I hope this helps!