Book second interview appointment via AIS before being instructed to

[ASBoston04 0]

My husband was refused at his first interview in March 2018 for Immigrant Visa and told to get waiver.  His solo i-212 waiver was approved January 30, 2019.  The last time we received a response the Montreal consulate told us they were in the process of giving us a list of documents to get that have expired (for example his medical).  Based on what I have read in these forums it seems they will likely be asking him to book a second interview.  I have also learned from these forums that it can take a while before you can get an appointment through the AIS website and when you finally do, it will likely not be for a month or two or three.  So my question is, can we book an appointment on the AIS website now even though the consulate has not instructed us to yet?  

[NikLR 13,227]

You can contact them but I wouldn't as they may cancel it without warning.