Im giving my pyxie frog about the size of a half dollar at the moment, 4 subadult crickets every day, is this enough, is it too much? i read on the caresheet here that it should eat as much as it can in 15 minutes, but i am the kind of person that wants to know an exact or estimate amount as i fear i may overfeed the little guy. he/she is my pride and joy right now!