Don't worry about the weight if gynae says everything is ok. I felt tt my baby was small, so I ate durian and drank milk, but it also didn't help lol. Baby was born at 2.7kg at 40+5. But he has caught up after birth, now at 90th percentile for his weight lol. So it's fine, don't worry too much.
i wouldn’t worry if my gynae said that everything is good. You’re almost reaching the end of pregnancy, take more rest and eat well, stay happy! All the best!