Hugs Naomi.
DS was 9 pounds (just over 4kgs) at birth. At 6 months, he was below the 10th percentile for weight. I was slightly worried, but my MCHN said all was fine.
At 12 months, he weighed 8.6kgs. He was doing really well with most things, but just a bit scrawny. He was comp fed... I breastfed when possible and I gave him some formula when required. You would think that the formula may have added some extra on his bones. He never had bones poking out. He rolled after 4 months, sat just after 6 months and walked at 10.5 months (which is pretty early) and did everything he was meant to by 12 months of age.
He was always average length and he has always had a big head.
At 2 years of age, he had hit 13 kgs and was spot on 50th percentile. He was just one of those active kids who took a while to take off. He's a very happy healthy boy who is still quite slender, but looks healthy.
I dont know if any of that helps. My MCHN was never worried because although he was dropping percentiles, he was never losing weight. He always gained. He always had wet and poopy nappies. He ws doing things he was meant to do in his own time (which mostly was quite early I spose).
They all have their own growth patterns, their own time that they decide to do things. Every child is different and what one can do another won't be able to.

DS was FULL on. He never really slept very well which I acutally think did really hinder his growth, because once he hit 12months and started sleeping, he started growing.
Anyway, just wanted to let you know about my experience. That just because they drop a percentile, it doesn't mean that there's anything wrong (heck, DS dropped from above the 90th to below the 10th in a matter of months.)

Hi everyone! All going pretty well here... same old. Hope you Melbie girls had a gret catch up today!!