A slight temp drop at night is not unusual as pretty much every country has one.
Except England/UK which can have a change of season overnight. I believe the CG comes from New Caledonia which has an average night time low of 26 at night. So long as you can keep this overnight your little gex should be just fine.
I don't believe you have to feed leo's crickets EVERY day anyway but may be wrong.
Have Fun!
