Hello Carissa,
Welcome to Frog Forum

Carlos has you covered well, as usual You can ALWAYS depend on him.

Keep the little froglet - nice and quiet as if it were at the edge of a pond with NO HUMAN for miles !

They MUST have live - moving -insects. Dusted occasionally with a calcium/ Vit D supplement. You might try a worm?

Josh's frogs has pinhead crickets and cricket supplies:
Crickets, Live Crickets, Cricket Care | Josh's Frogs
If you purchase enough, ( pin-head and small size) and the supplies for proper cricket care ----> the cricks will grow with your forglet.
Keep the crickets in a lg bin with a lid ( with melted - air- holes in the lid ) , food , clean water, and an empty paper towel roll to crawl into.

The froglet needs an always available source of clean water deep enough for it to get into BUT easy to get out of when he wants. This makes them feel safe---they think they are hiding. Emphasis is on the clean ! Spot clean each day / remove all dead feeders /food from the water. Change their water often ( like a fish tank) and use a de-chlorinator that is safe for amphibians. A small filter will help you keep the water clean.

Place a -clean- flat stone and some plastic plants into the enclosure for the frog to crawl up on to. He would enjoy some floating plants. Use the stone to place the crickets onto. A slope would be nice make in easy for the froglet to decide 'when' to be out of the water completely.

In their natural habitat they will be at the water's edge waiting for an insect to come by. When you take a walk around a pond ,for instance, they are the
kind of little frog that when spooked jumps back into the to the water. Studying them in their natural environment will help to create the best enclosure possible. Think about that big pond! This helps us to realize how difficult it is to reproduce their natural habitat. They hibernate in the mud during the winter in the wild, but will not do so in captivity.

Like a tree frog, they will do well with a day/night light schedule; with a full spectrum light availability at a pet store.Careful -- you don't not want to purchase lighting that gives of any heat.
ie don't keep the tank anywhere near a window. However they do ok in a wide range of temperatures. Worry more about the heat!

Remember - handling causes stress/ and removes part of their skin!
Wash your hands well if you should have to handle.
Wash well after regular maintenance- or use disposable vinyl /powder less/ non-latex gloves.

As Carlos mentioned - it's a shy frog. When a big human hand approaches the frog- the frog ,instinctively, thinks it is either going to be squished or be a predator's meal! This scare releases stress hormones which enable it to escape "from the bad guy". This constant stress can increase the risk of illness.

I hope this helps...please keep us posted.