Low supply help


2 weeks postpartum. I’m pumping and formula feeding baby. Baby was in the NICU for a week after birth and I wasn’t allowed to breastfeed while he was there. He was given bottled formula and pacifiers in the NICU. Since being home and trying breastfeeding, he gets super frustrated and upset and can’t latch. So I’m exclusively pumping now but I can’t provide enough breast milk for him. My supply started low from the beginning and my milk came in late (maybe due to stress of the NICU). I pump around 25-35 ml per session. My left breast pumps far less than my right. Any tips on increasing supply? I pump 7 times a day with one session around 3 am. I started drinking Milkmaid tea and Boobie bars coming in the mail.