Hello Doc, My baby is 9+ months old. I had Symmetric FGR/IUGR in pregnancy. His birth weight was 1.682 kgs, length was 38 cms and head circumference was 28 cms. Presently, his weight is 5.2 kgs, length 54 cms and head circumference is 39 cms. He doesn't babble much, not clapping, not waving. He babbles only when he feels sleepy and gets bored. He achieves other milestones on time like sitting, crawling, rolling over, standing by support. Please advise. Thanks in advance. Little worried Mum.