Hay, sa ganitong edad talaga kailangan niyang vitamins lalo na kung breastfed lang, kaya best to check with your pedia para malaman kung ano exactly ang kailangan ng baby mo based sa weight at health niya. A few of us moms, kami nag-start ng Vitamin D supplement around 2 weeks dahil recommended ng doctor, pero really, mag-consult ka na lang sa pediatrician mo para sure at safe, they'll recommend kung D lang or may iba pang kailangan depending sa feeding setup ninyo!