Stardawg/Blue dream

So, I am in the middle of week 3 and the 2 girls are growing quicker now. On 4th node with 5th starting, the stardawg is slighlty taller. Once the 5th node is showing and growing I will top them both, I have always topped my autos due to height issues and they have always been fine. Aslong as they are healthy, growing fast and not in flower they will be just fine. I'm not giving any nutrients just now but will start a little grow nutes soon. Note: added new week 3 pic. Got 3 days till end of week 3 and the blue dream has some pre flowers already, didn't expect them so soon. Makes me wonder if I should top or not even though it was recommended to do that with this strain.