Feeding enough every three days??

I feed my Bullfrogs, Obi and Kadesh, every three days. Their main staple right now is large dew worms (earthworms), with a few crickets, superworms and pinky mice thrown in there for variety. I have cut back on the fatty foods as per Johns' advice. However, both frogs are more aggressive at feeding time, especially Kadesh. Even after four large worms and two superworms as dessert (each), Kadesh was still lunging at the sides of the cage whenever he saw movement (including at my cat) and Obi sucked up and spat out substrate several times. Should I increase the amount of food I give them, or should I begin to feed them every two days instead of three? I thought they were big enough to start spacing out feedings, but the last three feedings have been the same behaviour. Thanks for your advice.