I do not want to misinterpret your words. Are you asking how much Vitamin D to give a “newborn” who has a level of 75nmol/l at this point in time?
We usually recommend 1000iu for every 25lbs of body weight.
Here at the VDC we believe in maintaining “healthy levels” of 125nmol/l(50ng/ml). If you breastfeed you would need to take a minimum of 6000iu a day or else your breast milk will not contain Vitamin D? Formula does contain Vitamin D but it is not enough.
If the baby is having any kind of health issues, please advise because the recommendation might be to give more.
If you have more questions, just ask!