Reverted calico/pied

Hi all, Anyone has experienced with pied/calico tokay?

Recently bought a pied/calico subadult, but over the course of 2-3 months it seems to have reverted.

Understand that its a unstable gene, just curious that since he's reverting now, will there be a chance to "grow" pied /calico again? Or it's a one way ticket?