Keep in mind that this brand in particular has a very low content of Vit D3 (one of the lowest in the market) and you can use it more frequently than every 2 weeks. If t your cham is not going to be in the sun you can probably use it daily. Some reputable breeders are using Repashy Plus LoD as their daily supplement as an all in one solution (I am not affiliated with them and I only started using it recently myself).
This is a small compendium of vit D content in different products in the market. Take a look at it and titrate according to your outside time schedule. The ones in the top are not ment to be given daily and would lead to an overdose. The once in the bottom might be to low if the cham is not constantly basking in natural light. There is no concensus over this issue because of the varying conditions of each animal (exposure to natural light, exposure to UVB in the enclosure, and probably species), so use your best judgement.
RepCal 400,000 IU/kg
Fluckers Reptacalcium 100,000 IU/lb
Exoterra 14,740 IU/lb
ZooMed ReptiCalcium 22,907 IU/kg
Repashy Plus LoD 8,000 IU/lb
I should add that the Repashy Plus LoD contains vitamins too, but there is a version with only calcium and VitD
