Question regarding Varicella doses

[relshamy 11]

Hi guys,

We received an RFE in the mail asking for an immunization record. The only vaccine missing was the varicella. My husband took the first dose this morning and we have an appointment to get it transcribed by a civil surgeon in a few days. My question is, is he required to take both doses before we visit the civil surgeon? They are a month apart and that's a long time to wait. I read on the USCIS the following:

Certain vaccine series can only be completed with multiple visits to the civil surgeon. Am I required to complete the entire series before the civil surgeon can sign the Form I-693?
A. You are only required to receive a single dose of each vaccine when you visit the civil surgeon. You are encouraged to follow up with your private health care provider to complete the series. Once you have received the single dose appropriate at the time, the civil surgeon can sign and certify the Form I-693.

But then, I saw some people receiving RFE's regarding the 2nd dose. It's confusing... What do you guys recommend? And if we send in the i693 now, and receive another RFE will we be required to get a new i693 from a civil surgeon? Any help would be appreciated. Thanks a lot!