u/Economy_Pudding2122

I got my blood tested and found out that I have severe vitamin B12 and vitamin D deficiencies. I am a vegetarian and do not consume milk either. I consulted a doctor, and he prescribed 1500 mcg of methylcobalamin daily and 60,000 IU of vitamin D3 weekly. I asked him to give me injections, but he said no and told me, “I am the doctor, and I know better.” He only prescribed supplements for 15 days and told me to come again. What should I do? It has been a week, and I do not see any improvement so far. Should I self-supplement?