She needs Nitrogen bad! Mine do that all the time when they start flowering, I use Biobizz only.
Check your PH and check official Biobizz-Schedule. Adjust the PH for N absorbtion 5,5-5,8.
The schedule tells you to never stop giving bio grow, why did you?
You can also look at the peel back labels on the Biobizz bottles. Bio-Grow is rich in N.
It's not too late if you act now, they will recover. If you have something else rich in N, give it to them just to be safe.
Hope that helps! 😘