my baby girl's birth weight was 2.5 kg now she is 9 months 6 days old and now she is 7.4 kg , she is super active . and I give her 3 times solids per day and breast milk

A. Still the current weight of your child is little less it should be at least 8.5 kg in this age so you should include more of proteins and dairy products into the diet of the child along with what you were giving and I think that is going to be much better for the growth of your child