Breastmilk Pumping

Hello po. Just want to ask to have some knowledge po. First time mom here and malapit na po ko bumalik sa work. Gusto ko pa rin po kasi i-bf milk si baby so I bought electric pump po. Just want to ask sa mga mommies na nag pupump po, how frequent do you pump po in a day? Salamat po.#1stimemom