Ok so how many times a week would I use the exo terra calcium+d3 and how man times a week the exo terra multivitamin and on how many insects?

Remember this is for a baby frog about 3 inches long.

Also it says on the calcium powder and the multivitamin powder that its suitable for reptiles and amphibians but on the calcium+d3 powder it says suitable for reptiles. It doesn't even mention amphibians. Will it still be ok?