9 month appointment

I just got back from Taryn and Asher's 9 month Dr's apt. Taryn is doing great she's 25% for height and 28% for weight. I'm a little worried about Asher though, 2 appointments ago he was around the 30 percentile, last apt he was 15% and this apt he was 5th percentile for height and way below the charts for weight. He's only gained 2 onces in the last 2 months. Of course, my Dr is on vacation this week so the NP said she would call me once he gets back in the office. In the meantime she had me schedule a weight check in 2 weeks.