How much does your child weigh and eat at 3years old?

I've been battling the same issue with my son he will be 3 in 3 months and weights a little bit over 28lbs. My doctor recommended I give him boost or pediasure half of bottle/container on the mornings after breakfast and half at night before bed time. He recommended I don't over feed him with milk they will get in a habit of getting too full on milk and that's why they aren't eating enough solids. What has also helped me is that basically in between meals I give him small snacks to to snack on while playing. I give pieces of fruits, dry cereal, basically anything healthy that he is willing to eat. You still should take her to her regular pediatrician I'm sure he will have better recommendations for you he can also recommend a meal plan/schedule, vitamins.