Suggest Best Supplement For Breast Milk To A New Born

Hello doctor.my son is 2 weeks old. I had a c section done. For the first 5 days of my delivery I couldn t produce breast milk, so doctor recommended lactogen 1. After 5 days had little milk, but my son is not liking the milk and b Very persistent that he would not have breast milk. I have tried so many times. And fed up now. Can u tell me the best equivalent supply for breast milk. Some say similac, formula , aptamil , enfamil and neonate lcp. Which 1 should I choose