The good news was, another new shoot was out and by yesterday, the first leaf was already big and the apical shoot is growing the second leaf.
One thing that I noted was there were a lot of black aphids gathering and breeding in exponential proportions on the apical shoot and I had to resort to wiping them off frequently over the last few days. It seems like this aphid is specific to this Curcuma and I seriously hope it would not spread to other plants.