Is There A Faster Way To Cure Pal Tiya Premium?

Yes, but this can diminish its strength a fair bit. 

Once sculpted, leave your piece uncovered, without water, overnight. It will become quite hard by the next day, but ultimately will never become as strong as keeping it wet for at least a week. If you need it to gain full strength, wrap it with wet towels and then plastic. 5 days is great. 4 weeks is totally awesome!