My first was similar to this and the doctor only ever said, oh she weighs more than last time, that's good! Every baby follows their own curve. I think the doctor looks for a lot of things, is she content, pooping regularly, lots of wet diapers, healthy color, development good etc - not just the curve.

It’s probably fine. The birth weight is more you than your baby. Your baby might still be going to their normal percentile. My second started at 40th percentile at birth and dropped down to around 11th where she has been since. She is just a small girl now - and has stayed along the same percentile for a couple of years. Her doctor isn’t worried - I’m not a very big person, so it’s not shocking that one of our kids take after me.

Looks like she's dropping percentiles pretty quickly, have you spoken to a lactation consultant? Right amount of wet and dirty diapers?