I would begin to cut back a bit. She is not obese or anything, just getting a little chubby. At 18" up to 600 grams is acceptable, but keep in mind that all beardies carry their weight differently. (ie, bigger heards, meatier tails, etc,etc.)
An adult beardie can do very nicely getting between 35-50 supers a week, so you could certainly reduce her feeders to 12 or so per day. You could also try offering two salads per day.