Your not doing anything wrong they look fine ... How long have they been flowering for ... I grew out a royal gorilla before and after 8 weeks it wasn't ready but people who I was involved with cut it down at that time and it wasn't half as good as it should have been smell and taste I thought it should have gone atleast 10 weeks they look to me around week 5-6 of flower so a fair bit to go it's not from when you plant it it's from when they start to flower you count down the weeks
Was worried that 110 days old something was wrong. I was counting from planting the germed seed not from the flowering start date. It's been 4.5 weeks of flower. I see all the white pistol still fully extended and not retracting so I was worried.
They looks fine and for the most art seem healthy. In another 6-8 weeks you will have some beautiful tasty buds if you just keep the plants healthy.