My stepdaughter's first pregnancy was also plagued by low amniotic fluid and they induced her early. Her child is completely normal in terms of intelligence, motor skills, etc. Please note that many children are diagnosed with learning disabilities these days, and it has nothing to do with amniotic fluid in 99% of the cases. So it's way too early to panic over this - but of course, you're completely normal in worrying. When my son was a newborn, I had a breast infection and decreased milk supply. Of course, my doctor was away and the sub (and nurses) dismissed my concerns, treating me like a child. When my doctor returned, I was able to be seen, and my son had gained only 4 ounces in a month. However, all of the growth was in his head/brain. The doctor said the body compensates by sending the nutrition to the key area - the brain. So maybe that is happening with your baby too.
Once the baby is born, there are many things you can do to address development from a nutritional standpoint. One thing to look at is Now for Kids from Reliv - it's a nutritional supplement that can be added to formula or breast milk, and it has DHA/Omega 3s for brain development. Some companies are adding DHA now, but Reliv has been doing it for years. Kids get great results with it, many avoid allergies, and there is a marked decrease in colds, flu, etc. My friend Stephanie has a child who was diagnosed with 50 food allergies and a learning disability. All of that is cleared up thanks to Now for Kids. So there is lots of hope now and going forward for you!