The sleep mode will be the problem. Since nobody has commented yet it might be that you might be the first one trying it. I've had good luck with those I link below but I'm not trying to keep it going during sleep mode. Try a few different ones and report back how it goes I guess.

https://www.amazon.com/gp/product/B08GLYSTLZ/ref=ppx\_yo\_dt\_b\_search\_asin\_title?ie=UTF8&psc=1