No topping, not much time for LST. Pour the light to them, boys. Good size container, some good nutrients starting at 1/4 strength. Water only for 2 weeks unless they truly show a different sign and then take pics and post here before you fuck them up more.
At 2 weeks you feed. Then follow with 2 waterings before feeding again. Let the soil dry well between feeding/waterings.
DO NOT OVERWATER. You will but I said it anyway. The #1 killer of all plants tended by man.
KISS. After all - they are autos. All you have to do is not kill them.