I would give her more Time, Its abig Plant... and she looks totally green and pisitls are white,,,,,,
Continue with feeding ( no need to let her starve) and iam sure in the upcoming 2 Weeks the buds will double
no need to flush.. or giving her just water....
Nutrients and chlorophyll braks down while curing
https://www.rxgreentechnologies.com/rxgt_trials/flushing-trial/