I'm not sure about your present situation and if you or parents can take corrective action; but bringing the daytime temps up to 84-85F are paramount to your frog's short and long term health. That is the priority issue to correct right now.

Do please look at the excellent care article linked before and try to make your Pacman's enclosure as close to it as possible. If by any chance you are getting conflicting information at other locations; then it's your choice which to follow. However, anyone advising keeping a Pacman in lower temps is plain wrong. If you want to learn more about these frogs here is a good reference book: Amazon.com: Horned Frogs: Plus Budgett's Frogs (Advanced Vivarium Systems) (9781882770885): Philippe De Vosjoli: Books . Good luck !