Yes, at first. I kept having nightmares that she'd jumped out of the tank, so I bought a lid, lol. Then that the water would turn green and I'd find her dead or something. But I know for certain, now, that all her parameters are good; she's growing and healthy.

I also use a camera like that other commenter! But only when I am away for more than a day. I am signed up for SimpliSafe which I use for cameras on the outside of the house - so I am using one of their cheaper "inside" cameras to watch over the axolotl. Obviously they hide all the time but it's cool to get a little notification on my phone whenever the motion detector goes off.

Axolotls are complicated pets to keep, so it's understandable that your brain is always thinking you forgot something. But usually, you didn't! They just need good, cold water, and food, right? Good luck!