My colony took a long time to move, 6 weeks the first time, nearly 3 months the second time, but eventually they did move
ur doing the right things, just got to wait, it will take them time to build a new nest
You could just move the old nest into the new tank, as long as you do it quickly, you shouldnt get to many escapes
very nice setup btw
They dont need high humidity, they come from dry places like Israel aswell as tropical areas, i keep mine at about 30% humidity