You are doing great.

You can also feed flightless fruit flies and pinhead crickets.
And if you get a dubia roach colony started you can feed the smallest nymphs.

mealworms are a bit controversial, I have heard and that mealworms can cause impaction if you feed too many of them.

And just like Gail said you need to start a regimen of dusting the feeders with calcium plus D3 on alternating days and multivitamins for once per week and not as the same time as the calcium.

A month ago I rehabbed a toad very similar size to yours and released it, unfortunately it was missing it's right foot.

I would've kept it but the little fellow was doing so well I didn't feel it was right to keep it.