baby weight gain?

at my baby's 9 month check up she weighted 19 lbs. just two weeks ago i weighed her and she still weighed 19 lbs. i weighed her last night and she weighs 23 now (she is 11 months today)!!! she's been eating so much. breakfast lunch and dinner , am i over feeding her ?? she drinks breast milk too but she just eats so much more now and i feed her until she tells me she doesn't want anymore. i guess i'm just surprised at how much she's gained in these two weeks and want to know if i should keep on or not. her next appointment isn't until 12 months so i don't want to make an appointment over something like his and look dumb lol