Defining 'Stability' in Waiver Guide

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Hi All, 

I am currently working a waiver for a herniated disc in my low back. I had a discectomy just over 3 months ago, and was under the impression I had demonstrated the requisite stability noted in the waiver guide. I just talked with one of the flight doctors who is holding up my waiver as they are unsure as to when exactly my symptoms/back issue was stable. My previous flight doctor (who has separated) believed it was once the discectomy was complete the stability could start assuming I did not regress. This new flight doctor is unsure as to when stability will start and is holding up my waiver until she hears back from folks at ACS. Does anyone have any experience with when stability would start in this instance? 

Thanks for any help!