This is what I got from my lawyer. It makes sense to me and see if it works for you. Couple of important points on when the clock for the medicals is reset is included. I posted a similar question earlier and I believe Q responded saying there could be two clocks at play. But my lawyer says only one clock which is the day you send it to USCIS. Hopefully it helps others using this forum.
Below is the message from my lawyer:
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We have received a request for evidence regarding your adjustment applications. The request is for updated medical exams. The policy of USCIS had been that exams must be current when submitted, and then the exams would be valid until the application was adjudicated. However, the policy changed on May 31, 2014, and now the medical exams are only valid for one year after they are submitted. Since your application has been pending more than one year, the RFE requests new exams.
Your priority date is May, 2009. For July, the Visa Bulletin has advanced the EB-2 (India) cut-off date to September 1, 2008. This means that the Visa Bulletin must advance at least 10 months before your application can be approved. There is a risk that we will submit the medical exams, and another year will pass before the priority date comes current. USCIS has advised us that they do not send the RFE unless they think that the priority date will be reached within the next year, but they also caution that priority date movement is uncertain and there are no guarantees. The goal is to have the case ready for adjudication when the date does become current. So there is also a risk that if we do not submit the exam, the date will become current, and the application will not be ready for adjudication.
We must balance these two risks.
My advice is that you and *****(spouse) should have the exams completed at your convenience. There is no rush, but I would do it within the next couple of weeks.
However, I would also suggest that we not submit the exams right away. The RFE is due on September 5 2014. While the application must be adjudicated within one year of the date the exam is submitted, the exam is valid for one year for submission from the date it is administered. Thus, if you have the exams now, but we submit them on August 20, 2014, the exam will remain valid until August 20, 2015.
This gives us the maximum time for your priority date to become current. If the dates move faster, and there is some indication in the August or September Visa Bulletin (published mid July and August, respectively) that the dates will move faster, we will be in a position to return the exam immediately.
It is not necessary to return to the same physician, but you may do so if the physician is still on the approved list. The approved list of physicians can be found on the USCIS website.
https://egov.uscis.gov/crisgwi/go?ac...ffice_type=CIV
As soon as you have the exams completed, please forward them in the sealed envelope to our office. Let me know if you have any questions. Thanks.