Talk to Neonatologist on Newborn Baby Poop Issue

We had a baby girl born at 34 weeks, and she was in the NICU for 3 days. Alhamdulillah, she has now been discharged. Initially, she passed stool regularly, 1-2 times a day, as reported by the NICU staff. After we brought her home, she passed stool on Sunday, but since then, she hasn’t pooped. She is being fed both Meiji Pre formula and breastmilk. There are no signs of discomfort, crying, or issues related to gas or constipation. Is this normal for a newborn?