MySOS is already blue, good to go! I got my j&j/Modena CDC certificate kicked back to me saying I need to include all three doses on it (I filled out shot one and two as janssen and 3 as moderna per the instructions), which there are only two, which was weird, but resubmitted the same picture and it was approved 5 minutes later. So go ahead and get your MySOS out of the way, even if you travel in November.