Hi, A good Flowering takes a t least 6-8 Weeks. And like Athos explaned , there are different Stages. The last 2 Weeks of Flower are the one with the Biggest " effects" Buds Maturating and get ready to harvest. Buddevelopment is a Combination in TIME, LIGHT, ROOTS and Nutrients in the ENd. FactorTIME is clear... minimum 5 Weeks to go. LIGHT... clear.. you have 600 Watts Led That should be fine for her.ROOTS... means Potsize, youve choosen an 18L Pot thats nice to her. And NUTRIENTS.....She gets a Bloomingfertiliser with P+K thats what she needs... maybe adding Later a Flowering Booster (P+K) but at the Moment everything looks very good. Maybe some Carbs for her( SugarBeetsirup/ Sugarcanesirup) into her Water 1 Tablespoon for around 3 liters. Happy Growing and Keep Patient