6 month check up height concerns

Shay • Single mama to a baby girl 💜

We had our 6 month check up and shots today. (She’ll be 7 months next week, apt was delayed)

My dr has some growth concerns regarding her height

At 4 months my daughters height was 64 cm (25.2 inches), and now almost 3 months later, she’s only 66cm (25.9inches). She’s only grown 2 cm. Dr said she should be growing 1.5-2.5 cm a month... so we have a 9 month check up to see what her height is at..

Should I be worried? Or is this common?