I think you could/should use calcium (without d3) every day - depending on what feeders you are using and what you are feeding those feeders.
Apparently you can offer the D3 and vits a little more often for young ones if you want to. My young ones get the same dusting schedule as my adults, just a greater quantity of feeders overall.
Note that the product (brand) you are using may influence how often you use. Check out this thread (especially half way down, Dave Weldon's comments) for interesting info: https://www.chameleonforums.com/mixing-cal-w-d3-15999/
For argument's sake I'll say that I'm not a big fan of constant supplementation. I think a varied diet of well-gutloaded insects is the most important thing to consider. I do not supplement often and when I do, it is very little. Of course, I have an outdoor setup with natural sunlight and all that, so different setups have different requirements, but I just thought I'd throw that out there.