That's very unfortunate. There is a 3-day period cool down currently, but it seems to be calendar day, maybe JP time zone. Anyway, the free period should be up until Tuesday 1am PDT (8am GMT), so you might be able to sneak in a second free transfer. If not, then check with SE customer service, though they may still be quite busy. At least it's only 1 transfer to move all 3.