Pre molt, how long it takes?

[felmor]

Hi guys, Since Friday my longi and c.exilicauda stopped eating.. I think this stage is called the premolt, hehe..

I was wondering how long it will take before it will really molt, I've been very excited seeing it molt since I knew it is premolt. Anyone knows? my C. exilicauda is 2i and my longi is 3i.. thanks