Reduce the feeding, especially nitrogen, your plants are very dark green.
Too much nitrogen will encourage extra leaf growth over flower formation.
Try "Sweet Seeds", they have awesome genetics that are well stabilized, if you want super trichome production, try any of their strains with complete confidence, but Gorilla Girl, San Fernando Lemon Kush, Zenzation, Red Hot Cookies, Indigo Berry Kush and Purple Punch OG will leave you speechless!
Their autos are also simply stunning!