Taking Calcium without D supplementation

I have been told to take my calcium WITHOUT vitamin D. I have unusually high levels of vitamin D in spite of stopping D supplements in 2022. My understanding was that you have to take D with the Calcium in order to absorb it but my doctor said my high levels of D already in my system are all that is needed. Does anyone have experience with taking calcium without the vitamin D component and if so, what kind of calcium did you take? Also, does anyone have any insight as to what might be causing the high levels of D? I do not take any supplements currently other than a multivitamin and calcium with D. I do not eat anything that is rich in vitamin D so it is not coming from my diet-which is what my doctor said is causing my elevated levels. Thank you