Talk to Pediatrician on Mother Feeding

I have 15 months old baby. He takes motherfeed. During daytime he feeds 2 to 3 times along with other eatables. while in night he only takes motherfeed. Since 3 to 4 months he feeds again and again during night. Now I feel pain in my joints and bones on account of weakness. I have tested my vitamin D, Calcium, ESR, uric acid, phosphorus Alkaline etc.on a doctor's recommendation. All tests are clear but calcium and vitamin D are low in value. kindly suggest me what type of diet should I take and may I continue to feed my baby or not?