Hi Shantel,
I am sorry to hear about what your son is going through. I'm sure you are worried. I am not a doctor by any means but a fellow Mom who worked in healthcare for many years. I think you are right to get specialty care. Shunt infections can be tricky to treat. If you can get in to Neuro quickly that makes more sense, especially if it is the doctor or group who placed the shunt. And by all means if your son worsens before you can get him seen, you can consider a trip to a pediatric ER if necessary.
I hope he finds healing soon,