I worked nocs at several LTC facilities. Ihe fewest residents I ever had was 48, the most 65. And yes, I was the only nurse, no med tech. I did usually have 3 CNAs when I had 60 res, though. sometimes 2 aides.
I think if you had two aides, it would be doable, but not w/ one. It takes two people to lift, turn and repositin most residents. If you only have one aide, you will be helping her w/ turning all noc and won't have time to get your own work done.