Large baby at 23 weeks

Hi mummies, anyone with experience of having large baby at 23 weeks? Baby’s bone proportion is normal, however her weight is much higher for the gestational age. Measuring at 1.1kg now. I dont recall eating more than usual. Anyone knows how can I reduce the baby’s weight gain? So far urine test hasnt picked up on high glucose levels, OGTT scheduled in Jan#firsttimemom #advicepls