Hello and congrats on your new baby! A picture of both the frog and the tank will helps us help you better. Firstly, that tank is too small for your red eye to live for a long period of time, you will need to upgrade to a bigger tank when you can. Secondly, your temps are dropping too low at night. How are you measuring your temps? I do not let the temps go below 70 on mine, use a heat pad at night to keep the temps up. How big is your new tree frog? Crickets should not be longer than the width of the space between your frog's eyes. I bowl feed mine so that I know exactly how much they are eating.

Here is a care sheet to help you figure out the details of how to care for your new friend - Frog Forum - Red-Eyed Leaf Frog/Red Eyed Tree Frog Care - Agalychnis callidryas