These guys like it warm. My advice for feeding virtually every amphibian is to offer as much food as they will eat in 15-20 minutes. For young frogs, do this every day. For older frogs every 2-3 days.
I feed my baby pac everyday and give him/her as much as he/she wants. I offer food to Grif everynight as well but lessin the amount of food every other to every 2 days. John's advice is solid though. I would do as he says.