I have not worked cyrto incubation out. The season before last I had a clutch of 2 and a clutch of 1 laid on the same day. They were all placed in the same incubation container. 1 hatched at 93 days, 1 at 150 days and the other at 190 days. Same tub, same temp, same everything. The yanks have a similar species that has been known to suddenly erupt from an incubation diapause (when they are in this long rest stage they are fully formed already) with sudden wetting (large wad of wet spaghnum over the eggs). Apparently this happens with some chameleons as well. Something to try this coming season