Low supply 😔

Been pumping for 10 weeks now for my baby in the Nicu and this is what I get from each session. He’s mostly formula fed now and gets my milk maybe once a day because a whole day of pumping is just one meal for him. I’m hoping that by the time he leaves the hospital in 3 weeks or less hopefully that he’ll be on mostly breast milk. How can I increase my supply? I’m only able to pump about 5 times a day