@elaussies I hope you will talk to your doctor because high levels of Vitamin D can cause too much calcium, so supplements might not be harmful. This is complex and probably not a matter for this forum but instead for a doctor or nutritionist. See below:

"The main side effect of high levels of vitamin D (toxicity) is a buildup of calcium in your blood (hypercalcemia), which can cause nausea and vomiting, weakness, and frequent urination. It might also progress to bone pain and kidney calcium stones. Other possible side effects are decrease in appetite, constipation, dehydration, increased thirst (polydipsia), confusion, lethargy, and fatigue."
https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/vitamin-d-toxicity/faq-20058108