Alright, I got a small feeder mouse for him today.
Should I offer it tonight, or wait another few days?
Im just all worried about him killing over, which I guess is over worrying?
He has been drinking and passing urine and urates.

His temps and humidity are normal from what I've read from care sheets. I did do 3 months of study before purchasing, so I'm not completely uninformed.

Also I do have a smaller black tub I could try to feed him in/move him over to. His current tub isn't too big, or so I thought, and it's cluttered with hides and his water bowl. I also drap a towel over that tub at night just in case, also have had it draped over every time I've tried feeding him, so I don't stand and watch.
I will be watching from afar with this live feeder though, of course.