Yes, my DD dropped a few centimes around this age too. As she looked healthy no-one was worried. My froend's DS is 10th centile and seems tiny next to my 91st centile DD and mum was worried about how little he was eating/drinking. So worried they took him to see a dietician, who reassured them and pointed out that a smaller child needs quite a bit less than a bigger one to keep them going.
We always had additional trouble with milk fees around teething and/or reflux flare-ups.