I took DS #2 for his 9 month visit today. At 9 months he is 19.2 lbs and 28 inches, which are 28th and 40th percentile, respectively. He's been steadily declining on both - his weight was 90th percentile at birth, 47th at 3 months, 39th at 6 months. He started out at 60th on height.
My pedi does not seem concerned, but should I be? DS #2 was exclusively breast and pumped BM bottle fed until 6 months, when we started introducing solids. He loves everything we've given him and now eats 2-3 solid meals a day, in addition to either BF or getting a bottle of BM ~5-7x a day, depending on how many times he wakes up at night. He's had some reflux issues and continues to be a spitter though medication has taken away the pain. As a result, if we give him any more than 4 oz in a bottle at a time he spits it up, so I'm not sure how to increase BM intake (co-sleeping is not an option, as it is, I'd like to drop the 1-2 overnight feedings).
He started crawling at 7 months, pulling himself up and cruising at 7.5 months and now, at 9 months, will take a push toy and push it all over the house while walking behind it. The pedi's theory is that he's getting a lot more exercise than a typical 9 month old so that helps explain the trends. He is a very happy, engaged, active little boy, but I just want to make sure we're not missing anything.
Thoughts? Thanks in advance for your help!