Your plants look very good, but they are realy not ready for any harvesting. Be patient and wait at least 3 weeks, the preflowering is developing good and those tops will at least double in size. Check some logs of people have the same kind of plants ;-)
Warte besser ,bevor du zu früh erntest. Die vom breeder angegebenen Erntezeiten sind fürn A... schau, ob die buds fett sind, trichome richtig und das Gesamtbild sagt, "ich bin fertig".