Enlarged adenoids please please I need help

My 4 year old daughter was diagnosed with enlarged adenoids by her allergist. I have been trying to help her for about 2 years. Her pediatrician always says it’s a virus and had to run it’s course. I finally took matters in my own hands and took her to an allergist who found she was allergic to rice and her adenoids were enlarged. We stopped rice which is her favorite food. It’s been two weeks and these are her symptoms
1. Clear nasal discharge
2. Wet Coughing
3. Throat clearing
4. Sound like her nose is pinched when she talks
5. Labored breathing (sometimes, like she’s been running)
6.colds back to back
7. Seems to develop slower than her peers. Cannot answer questions like what did you do today or why did you do that? ( her answer will be “ cause I did that”)

She is tall and lean. Doesn’t like eating foods other than potatoes and chicken. Doesn’t like to sit still. Cannot concentrate or remember things. Allergic to rice. She’s nice most of the time. Pleas help me . I beg you.