ALMOST LACK OF BREAST MILK

hello mga mamsh. my LO is just 4days old and sobrang konti ko mag produce ng milk. so i had to try feeding him with formula milk kase yan lang kinakaya ng napa-pump ko. pero i still tried fo feed him with any amount of breast milk na napa-pump ko, then pag di enough, magtitimpla na ako ng formula. been eating anything with malunggay plus im also taking Natalac. any more advise please. thank you! #firsttimemom #advicepls #pleasehelp