Refrigerating Axolotl Larvae?

[BabyNemo]

I have 60+ less than a week old Axolotl larvae and where I live is going through a heat wave. I'm unable to cool down their room since it doesn't have air conditioning. I do have a mini fridge and I was wondering if it would be okay to put them in the fridge, doing daily water changes of course, and keeping the temperature between 50-65 degrees F. I've read that you can refrigerate them if they are sick to help them recover, but I'm not sure if it's okay to do with couple day old larvae just to keep them cool.
Thank you for any information you can give me. I hope this is in the right place.

 

[Jibberish23]

I think they should be fine( idk though) but I know that lower temps make egg hatch time much slower than warmer.