Breastmilk

Mag 1month na si LO tomorrow and ganito lang napapump ko for 2 consecutive pumping with an interval of 2 hours. 5oz lang siya. Kayo momsh, gano na kadami napproduce niyong milk and please give me some tips para dumami milk production ko. ? Also, should I invest on an e-pump or sapat na ang manual pump? Thank you in advance sa mga sasagot. ??