Baby’s weight

Hello, I’m a type 2 diabetic and it runs heavily in both mine and my husbands family. I’m worried about my child being at risk of it in the future and really want to focus on her having a healthy relationship with food in the future. As of now she is combo fed with formula and breast milk. Is her weight/ overfeeding something to be concerned with now? Can she get fat/become overweight from formula or breast milk ? Or is this more of a concern as they get older and start solids ? I do have an appointment with her pediatrician and plan to mention my concerns but i’m scheduled pretty far out for this.