Low pumping volume

Sarah

Hey ladies! Im a new mommy and I've only been producing milk for a week now and my supply is low. Im only doing 25 to 40 ml every pumping session. I pump every 2 to 3 hrs during the day and 4 hrs at night for 15 to 20 mins. I've tried the warm compresses and massaging before and during but that doesnt seem to help. Any tips on how to increase my milk? Or is it an okay amount considering I'm still only a week in? Thanks!