Will young p spinigerus scavenge?

I keep tarantulas and a few other inverts. I've never kept a scorpion, but I've been very interested and researching. I agreed to adopt a "large" stripetail, thinking that would be at about 1" and able to take the same size prey as my 1" tarantula.

I am now the mama of a very tiny 1/2" stripetail scorpion.

Will he scavenge pre-killed feeders at this size, or do I need fruit flies or springtails?