Experience Pumping breastmilk!

Mommies, sino po ba ang may experience for pumping. Kasi, back to work na ako this jan.16 the 12 hours duty ko every day thats 2 days and 2 nights. But i have to left my baby at the province thats 2 and a half hours from where i work, so i choose to rent an apartment and leave my baby at husbands mother. Pa tulong po, kung pano ko siya magagawa or kakayanin ko kaya mag pump?