Is this bad for a Hermanns?

[Slbrlb]

I have a 15 month old Hermann’s and until yesterday had a CHE on 24/7. The nighttime temps never dropped below 71F. We just upgraded his enclosure and since he is no longer a hatchling I thought he would be okay without nighttime heat now. I just looked, and the nighttime temp dropped to 63 and 61 on both sides of the tank. It’s now warming back up with the heat lights back on but I worry if that will cause a shock since he’s never been in temps that cold before? Also is 60 too cold for nighttime?

 

[wellington]

Obviously you are not letting him brumate so for now the temps should be kept warmer then normal so he doesn't try to brumate. I would still heat at night if it's still getting cold where you are.

 

[wellington]

As for the night temps, older ones can stand it a little cooler then hatchlings.
I wouldn't let it drop for an adult below 65. Hatchlings to adulthood 70