Neoris huttoni

Dear Colleagues, please help me!
Today I received an envelope with the eggs Neoris huttoni.
The envelope was on the road more than 20 days.
10 larvae emerged from eggs.
The remaining eggs are OK, but it seems to me that they too have started to develop.
What do you think the rest of the eggs can be placed on a cold, and the larvae hatch in the spring?
Or leave the warmth, and when the rest of the larvae hatch to feed their Ligustrum?
How should I do in this situation?
Thanks in advance!