Advice for help with my wife's US I-130 application

Howdy - I have been reading your responses and appreciate the knowledge you have on the VISA process.  I think that my wife and I were  thorough on the application that we submitted.  Our I-130 petition was received at the Nebraska service center on April 13, 2018.  I have lots of questions but the most important one concerns is there any way to speed up the process or is it pretty much a hurry up and wait?  I am returning to Bangkok so that I can be with my wife while the petition is in process and have the ability to stay for an extended period of time if I have to.  The problem that I have however is a medical one.  I am facing having to have a back fusion totally replaced due to failure and rod breakage and may have to return to the United States to have it done sooner than the projected processing time estimate.  I have testimonies from my doctors that it is necessary for me to have care and assistance when this procedure is done and that my wife is a critical piece of my recovery.  How do I go about amending the application to add these letters into evidence?  I do have the outside chance of assistance from a family friend who has deep political influence but it would require her to involve her son who has taken over their corporations.  Could that help or would I just be wasting everyone's time?  Many thanks for any advice in advance.  Mahalo, Nuke