Don’t beat yourself up. My boy is on a diet now too cuz he got a little too pudgy and I didn’t realize. It’s an easy thing to oversee since you look at them daily. Just do what you can now :)
I’ve been using Govee smart plugs or the Kasa smart power strip. Both connect with WiFi and Bluetooth. I have my phone and iPad set up to these and they both seem to ‘remember’ their schedule if the power goes out or WiFi goes out. Maybe the Bluetooth option will work for you too? Just a...
I would put baby in a hospital bin to start with, this can be something as simple as a box with a towel on the bottom, and some leave coverage to help the chameleon feel a little more secure. Do you have any extra heat lamps, hygrometers/thermometers and uvb lights to use?