"I would move heaven and hell to find a device or treatment that...

"I would move heaven and hell to find a device or treatment that would help him" – as long as moving heaven and hell doesn't involve reading anything it would seem. You have clearly not taken even a moment to understand the principles of the device.

"A device surrounding the head changing brain waves" – wrong. The device surrounding the head has no influence on brain waves. The headband's function is specifically and only to measure brain waves.

"with no dose measurement or brainwave feedback" – wrong. Again, the headband provides the feedback so the device can monitor whether it is having the desired effect.

– wrong. You have completely omitted any mention of the fact that the device delivers a stimulus combined with adjustment driven by feedback, which has been shown in scientific literature to produce alteration in the brain's electrical activity! A few references cited below. You can find dozens more if you take even a moment to do some research.

"outcome measures used in autism can be very subjective and as such difficult to objectively quantify" – wrong. If that were true how could autism be diagnosed in the first place?! I would refer you to Diagnostic Assessment of Autism: A Review of Objective Scales in the Journal of Psychoeducational Assessment for more information. Note the use of the word objective here. The same scales that are used to diagnose autism can be used to objectively measure change (or lack of change) produced by a treatment.

May I ask why would you do this? Why would you pretend to have medical expertise? Why would you pretend you have an autistic child? On the face of it this is a shocking construction of deceitfulness. Any genuine medical practitioner, and any parent or carer of an autistic child will probably find your post appalling and deeply offensive.


REFERENCES:
Pineda J. A. (2014) Neurofeedback training produces normalization in behavioural and electrophysiological measures of high-functioning autism. Philosophical Transactions of the Royal
Society of London. June, 369(1644)
Steiner N. J. (2014) A pilot feasibility study of neurofeedback for children with autism Applied Psychophysiological and Biofeedback. June, 39(2), pp. 99-107
Okhadze, E., Baruth, J., El-Baz, Tasman, A., Sears, L., Wang, Y. Lamina, EV. Casanova, MF. (2014). Neuromodulation Integrating rTMS and Neurofeedback for the Treatment of Autism Spectrum Disorder. Appl Psychophysiol Biofeedback. 2014 Dec;39(3-4):237-57. doi: 10.1007/s10484-014-9264-7