Worried Mama

I was referred to a high risk doctor recently. I’m 29 weeks. My baby’s belly is not growing like it should and they are monitoring me closely for fetal growth restriction and placental insufficiency. My baby weighs 2 lbs and 12 oz and is in the 39th percentile for size overall. But his belly is now in the 7th percentile. Has anyone ever experienced this? If so, what was the outcome? It’s such a helpless feeling knowing that my body may not be able to provide what my baby needs. 😢 Thank you for any advice in advance!