Struggling to get pediatrician to follow through on getting answers

I have a 4 year old daughter that has been having odd symptoms for a while. She was born at 35 weeks with a 9 day NICU stay due to preemie apnea. She has significant farsightedness in her left eye that seemed to get bad out of nowhere. We had no indication she was struggling with the eye until about 3 weeks before she was diagnosed with a prescription of +2.75/+6.50. She has been in glasses for over a year and a half, patched for a while and her prescription has been increasing. About 4 months ago she started complaining of seeing spots in her bad eye and has really struggled with it even after an increase in prescription. In the past couple of weeks she has been complaining of headaches in her forehead, "polka dots" in her eye and rubbing it frequently. She has always been my independent child and wanted to get dressed without help, do everything for herself. But lately she has been getting up in the mornings almost in a daze. I tell her to get dressed and she moves a little and then just doesn't. She has horrible environmental allergies and has been under the care of allergists since she was 2. She was recently diagnosed with asthma even though her allergist is not confident in the diagnoses. She has flares of higher than normal heart rates but her O2 usually remains pretty steady, oddly the albuterol actually seems to level out her heart rate instead of increasing it. She often wakes up shaking like she is cold but is toasty and warm with no fever. Lately she has had a lot of complaints of restless leg symptoms as well as leg and foot cramps. She has had an echo which was normal, been tested for anemia, and had a tonsillectomy/adenoidectomy due to obstructive sleep apnea. We are now struggling in school due to memory, comprehension and attention issues. All of her doctors that see her regularly are pushing for her to be sent to a pediatric neurologist however we having issues getting her pediatrician to get the ball rolling. I am not sure how long to let the headaches go on before I get concerned since they are getting in no hurry to figure it out. Her school has called me everyday this week because of her complaining of headaches.