DD is 2.5 weeks old, born at 36 weeks gestation, so a bit early. We found out she is lactose intolerant, so we had to switch her to a soy formula (exclusively FF) almost a week ago. Prior to switching formulas, she had lost more than 15% of her birth weight. She has still not reached her birth weight yet, but is getting close.
I give this information because I am wondering if she is just still too tired, not enough spare energy to keep her eyes open. She has only really started opening her eyes at all in the past 3 days. Prior to that, she would maybe peek her eyes open for a second or two while burping her. Now, she will open them, not really wide though, for about 5 seconds at a time and will maybe do this after a feeding about 3-4 times per day.
Has anyone else experienced this with their newborn? I am just wondering why she isn't staying awake at all between feedings, or if its just a little early for her to be doing that yet.