Germanoanswered grow question 5 years ago hey bro
they are looking really good ( i am doing the same Strain),your are really fast,which is a good thing :D
it is normal that some leaves turns yellow at the begining of flowering , you can start giving them Biobizz Bloom now , i would not change anything else ,becuase the plants are more sensitive to over feeding in flowering phase ,over feeding them can stun the growth, and you dont want that ,specially with flowering 😉