What are signs that baby is outgrowing the band?

[Guest guest]

My daughter, who has been in the band for more than 3 months now,

recently started tucking on it quite a bit. She is almost 11 months old

and I was wondering if she is now noticing it more or if this could be

a sign that it is getting too tight. She also has a red spot that

doesn't completely go away within the hour. It fades, but is still

visible. We have an appointment for an adjustment on Tuesday and so I

am not worried about that, but I was just wondering if there were

any 'signs' to look out for that she is outgrowing her band. She hasn't

grown as fast as they expected her to and is behind on her timeline

quite a bit and due to that, I can't use it as a guide.

Thank you!