Sabar ye mama, 31 weeks premature memang challenging tapi banyak babies survive dan thriving sekarang. I know a few mums whose babies lahir early, one at 30 weeks, she spent about 3-4 weeks in NICU and her baby's weight picked up gradually once feeding routine settled, so jangan stress sangat about the timing. Since your milk supply is low, definitely chat with the NICU staff about combination feeding or donor milk options, they usually punya resources and the nurses are very supportive about this. Better you go back and see your lactation consultant or doctor sebab stress akan affect milk supply lagi, so kena manage your own health dulu. Sending you strength mama, this phase will pass and soon your baby will be home, one day at a time.