Will saying Creator’s Recommended Daily Prayers make alternate day use of ProDentim optimally effective because the prayers request augmentation of the diet, to add what is needed, or perhaps not, because this product is not, strictly speaking, nutrition?

This strategy will work just fine, as it does for the myriad of things contained in a wide array of so-called nutritional supplements. In actuality, we do interpret the term "nutritional" quite widely as being something of benefit to the workings of the physical body. After all, that is what nutrition represents, a substance or substances supporting healthy bodily function. Even though these are largely obtained through food consumed, much in food is not, strictly speaking, normal nutrition, but a myriad of chemical substances made by plants that are not contributing obligatory things such as key vitamins, nor a source of calories for energy production which is the primary function of food to begin with. But there are many, many, other useful attributes and we see that as a broader meaning of nutrition. Anything of value to physical health and vitality is providing a form of nutrition that is a benefit. So the daily prayer you mention will cover this and many other supplements in providing a useful adjunct of great value in seeing that the benefits are brought about through a divine expansion of the energies to cover what is needed, even with intermittent usage and intake.