My 4th son is exactly the same, and at 17 months in 8.5 kg and 74 cm. We are under the care of a paediatrician too, who isn’t all that concerned, because the last 3 months he has been gaining weight, albeit, very small amounts!
I’ve found adding almond meal to his custard and yoghurt and offering full fat milk as well as breast feeds helped a lot. I also offer lots of high fats foods such as cheeses or add it grated on top of his meals. You need to look carefully at labels though, because most foods these days are low fat, which doesn’t help our kids!!
Try not to worry though, he may just be a small kid. As long as he’s healthy, he’ll be fine!
Published 9th December 2019