Your froglet must be fed everyday or every 2 days.
Crickets, red runner roaches and earthworms are good food.
Give preys which can enter easily in its mouth.
3 to 4 preys per day for such a froglet is ok.
Don't forget to dust with calcium 2 insects per week for example and 1 insect each 2 weeks with calcium + vit D3 (Not much D3).