you can take it after consulting ur doctor. He must have given you the dose for three weeks if I am not mistaking.D3 deficiency is raising alarm in our country these days.please take more
calcium in your diet,do regular free hand exercise on daily basis. Try to take sun bath in morning obviously,it's the best source of
vitamin D3.
Next Steps
for homoeipathic supplement you can consult me by calling through Practo.