Emergency Food?

[Mentat]

Do you have stores selling small crickets? At your frogs size they should be able to eat the smaller ones after pinhead stage. Can size them same as distance between frogs eyes. If the garden has never been sprayed and you are far from other neighbors you could try to feed those earthworms. Good luck !

[flybyferns]

You could modify small crickets if they are too big, by eliminating some limbs They will still wiggle.
It's very sad though (I'm a big baby)

[UncleChester]

I've been using garden earthworms for a few years. No chemicals in my garden either and I'm far from neighbours. Not all frogs will eat them due to taste. Young enough worms will be very thin and even your 1/2" froglets should be able to handle them without chopping, though thin enough worms can be hard to handle without accidentally splitting. Chopping up larger ones is fine if the froglets will still eat them.